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BOSTON MARATHON 2023

Michael Brosilow

IL

Bib: 6952 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 21%
Gender (Male)
#0 / 15176
Top 34%
Masters (Masters Men)
#0 / 9891
Top 20%
Division (M65-69)
#0 / 549
Top 0.5%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:56/mi
21:34
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:57/mi
43:11
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:04/mi
1:05:07
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:14/mi
1:27:35
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:49/mi
1:32:14
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:11/mi
1:49:38
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:22/mi
2:12:32
↑ 181↓ 1480.2%
138 ft elev
20M
7:21/mi
2:22:31
↑ 64↓ 500.2%
148 ft elev
21M
7:40/mi
2:30:11
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:10/mi
2:35:33
↑ 17↓ 861.7%
156 ft elev
23M
7:14/mi
2:44:36
↑ 23↓ 630.6%
116 ft elev
24M
6:54/mi
2:51:30
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:05/mi
2:57:33
↓ 200.3%
20 ft elev
25.2M
7:29/mi
3:00:08
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:46/mi
3:07:02
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:32:147:02 /mi⚡ faster
2nd Half
1:34:487:14 /mi+2.8%
Positive split — 2.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5021:346:5621:34
6:56
-
10K
6.21 mi10:46:2743:116:5721:37
6:57
+0:01
15K
9.32 mi11:08:231:05:076:5921:56
7:04
+0:07
20K
12.43 mi11:30:511:27:357:0322:28
7:14
+0:10
Half
13.11 mi11:35:301:32:147:024:39
6:49
-0:25
25K
15.53 mi11:52:541:49:387:0317:24
7:11
+0:22
30K
18.64 mi12:15:482:12:327:0722:54
7:22
+0:11
20M
20.00 mi12:25:472:22:317:089:59
7:21
-0:01
21M
21.00 mi12:33:272:30:117:097:40
7:40
+0:19
35K
21.75 mi12:38:492:35:337:095:22
7:10
-0:30
23M
23.00 mi12:47:522:44:367:099:03
7:14
+0:04
24M
24.00 mi12:54:462:51:307:096:54
6:54
-0:20
40K
24.85 mi13:00:492:57:337:096:03
7:05
+0:11
25.2M
25.20 mi13:03:243:00:087:092:35
7:29
+0:24
Finish
26.22 mi13:10:183:07:027:086:54
6:46
-0:43

Checkpoints & Pacing

Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:46 /mi

Average Pace

7:08 /mi

Slowest Pace

7:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

2:56:47

95% of race

Time at Steady Pace

10:15

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:08 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:24:5021:346:5621:34
6:56
#5876
10K
6.21 mi10:46:2743:116:5721:37
6:57
#6191
15K
9.32 mi11:08:231:05:076:5921:56
7:04
#6413
20K
12.43 mi11:30:511:27:357:0322:28
7:14
#6624
Half
13.11 mi11:35:301:32:147:024:39
6:49
#6561
25K
15.53 mi11:52:541:49:387:0317:24
7:11
#6538
30K
18.64 mi12:15:482:12:327:0722:54
7:22
#6453
20M
20.00 mi12:25:472:22:317:089:59
7:21
#6382
21M
21.00 mi12:33:272:30:117:097:40
7:40
#6293
35K
21.75 mi12:38:492:35:337:095:22
7:10
#6267
23M
23.00 mi12:47:522:44:367:099:03
7:14
#6146
24M
24.00 mi12:54:462:51:307:096:54
6:54
#5999
40K
24.85 mi13:00:492:57:337:096:03
7:05
#5884
25.2M
25.20 mi13:03:243:00:087:092:35
7:29
#5842
Finish
26.22 mi13:10:183:07:027:086:54
6:46
#5708
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi587653885388689661626162
10K6.21 mi3.10 mi6191-3155631-2435631-243652458745874
15K9.32 mi3.11 mi6413-2225797-1665797-166689661626162
20K12.43 mi3.11 mi6624-2115953-1565953-156727964056405
Half13.11 mi0.68 mi6561+635906+475906+47541049934993
25K15.53 mi2.42 mi6538+235881+255881+25652558155815
30K18.64 mi3.11 mi6453+855807+745807+74641456675667
20M20.00 mi1.36 mi6382+715740+675740+67588152005200
21M21.00 mi1.00 mi6293+895664+765664+76543747904790
35K21.75 mi0.75 mi6267+265640+245640+24631454425442
23M23.00 mi1.25 mi6146+1215536+1045536+104493944224422
24M24.00 mi1.00 mi5999+1475406+1305406+130418438103810
40K24.85 mi0.85 mi5884+1155307+995307+99425637913791
25.2M25.20 mi0.35 mi5842+425272+355272+35388834783478
Finish26.22 mi1.02 mi5708+1345156+1165156+116392534813481

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

6896

Males

6162

M65-69

6162

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

6524

Males

5874

M65-69

5874

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

6896

Males

6162

M65-69

6162

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7279

Males

6405

M65-69

6405

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5410

Males

4993

M65-69

4993

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6525

Males

5815

M65-69

5815

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6414

Males

5667

M65-69

5667

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5881

Males

5200

M65-69

5200

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5437

Males

4790

M65-69

4790

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6314

Males

5442

M65-69

5442

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

4939

Males

4422

M65-69

4422

23M→24M

23.0 - 24.0 mi

Top 16%
×6story building
+12ft-82ft

Overall

4184

Males

3810

M65-69

3810

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4256

Males

3791

M65-69

3791

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3888

Males

3478

M65-69

3478

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

3925

Males

3481

M65-69

3481

Passing Analysis

Category:
Athletes Passed
1318
Passed By
1150
Net Change
+168
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5876
5K → 10K76391-315#5876#6191
10K → 15K51273-222#6191#6413
15K → 20K53264-211#6413#6624
20K → Half652+63#6624#6561
Half → 25K8360+23#6561#6538
25K → 30K15671+85#6538#6453
30K → 20M9322+71#6453#6382
20M → 21M10617+89#6382#6293
21M → 35K4317+26#6293#6267
35K → 23M13514+121#6267#6146
23M → 24M1481+147#6146#5999
24M → 40K1227+115#5999#5884
40K → 25.2M442+42#5884#5842
25.2M → Finish1439+134#5842#5708
TOTALS13181150+168

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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