Capital Road Race Management
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BOSTON MARATHON 2023

Chaiwat Engtrakul

CO

Bib: 641 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Masters (Masters Men)
#0 / 9891
Top 0.4%
Division (M45-49)
#0 / 2252
Top 0.3%
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
5:54/mi
18:19
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
5:56/mi
36:45
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
5:53/mi
55:03
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
5:58/mi
1:13:36
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
5:55/mi
1:17:38
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
5:58/mi
1:32:05
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:05/mi
1:51:00
↑ 181↓ 1480.2%
138 ft elev
20M
6:06/mi
1:59:18
↑ 64↓ 500.2%
148 ft elev
21M
6:22/mi
2:05:40
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
5:44/mi
2:09:57
↑ 17↓ 861.7%
156 ft elev
23M
6:01/mi
2:17:29
↑ 23↓ 630.6%
116 ft elev
24M
5:52/mi
2:23:21
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:03/mi
2:28:31
↓ 200.3%
20 ft elev
25.2M
6:29/mi
2:30:45
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
5:47/mi
2:36:39
↑ 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
1:17:385:55 /mi⚡ faster
2nd Half
1:19:016:02 /mi+1.8%
Positive split — 1.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
18:195:543.11 mi18:19
5:54
-
10K
36:455:553.10 mi18:26
5:56
+0:02
15K
55:035:543.11 mi18:18
5:53
-0:03
20K
1:13:365:553.11 mi18:33
5:58
+0:05
Half(13.11 mi)
1:17:385:550.68 mi4:02
5:55
-0:03
25K
1:32:055:562.42 mi14:27
5:58
+0:03
30K
1:51:005:573.11 mi18:55
6:05
+0:07
20M
1:59:185:581.36 mi8:18
6:06
+0:01
21M
2:05:405:591.00 mi6:22
6:22
+0:16
35K
2:09:575:590.75 mi4:17
5:44
-0:38
23M
2:17:295:591.25 mi7:32
6:01
+0:17
24M
2:23:215:581.00 mi5:52
5:52
-0:09
40K
2:28:315:590.85 mi5:10
6:03
+0:11
25.2M
2:30:455:590.35 mi2:14
6:29
+0:26
Finish(26.22 mi)
2:36:395:591.02 mi5:54
5:47
-0:42
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

5:44 /mi

Average Pace

5:59 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:28:03

95% of race

Time at Steady Pace

8:36

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:58 /mi

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

Heatmap

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

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi520478478490453453
10K3.10 mi580-60538-60538-60645602602
15K3.11 mi552+28510+28510+28490453453
20K3.11 mi539+13498+12498+12518478478
Half(13.11 mi)0.68 mi536+3495+3495+3553515515
25K2.42 mi526+10486+9486+9484448448
30K3.11 mi500+26462+24462+24488456456
20M1.36 mi487+13450+12450+12488454454
21M1.00 mi475+12439+11439+11431398398
35K0.75 mi468+7431+8431+8268243243
23M1.25 mi453+15417+14417+14318293293
24M1.00 mi448+5412+5412+5339313313
40K0.85 mi435+13400+12400+12390365365
25.2M0.35 mi432+3397+3397+3454428428
Finish(26.22 mi)1.02 mi417+15382+15382+15346328328

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

490

Males

453

M45-49

453

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

645

Males

602

M45-49

602

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

490

Males

453

M45-49

453

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

518

Males

478

M45-49

478

20K→Half

12.4 - 13.1 mi

Top 2%
×2story building
+19ft-37ft

Overall

553

Males

515

M45-49

515

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

484

Males

448

M45-49

448

25K→30K

15.5 - 18.6 mi

Top 2%
×9story building
+181ft-148ft

Overall

488

Males

456

M45-49

456

30K→20M

18.6 - 20.0 mi

Top 2%
×5story building
+64ft-50ft

Overall

488

Males

454

M45-49

454

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

431

Males

398

M45-49

398

21M→35K

21.0 - 21.8 mi

Top 1%
×7story building
+17ft-86ft

Overall

268

Males

243

M45-49

243

35K→23M

21.8 - 23.0 mi

Top 1%
×5story building
+23ft-63ft

Overall

318

Males

293

M45-49

293

23M→24M

23.0 - 24.0 mi

Top 1%
×6story building
+12ft-82ft

Overall

339

Males

313

M45-49

313

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

390

Males

365

M45-49

365

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

454

Males

428

M45-49

428

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2story building
+22ft-21ft

Overall

346

Males

328

M45-49

328

Passing Analysis

Category:
Passed
219
Passed By
116
Net Change
+103
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#520
5K → 10K1070-60#520#580
10K → 15K335+28#580#552
15K → 20K2613+13#552#539
20K → Half41+3#539#536
Half → 25K144+10#536#526
25K → 30K337+26#526#500
30K → 20M130+13#500#487
20M → 21M142+12#487#475
21M → 35K81+7#475#468
35K → 23M194+15#468#453
23M → 24M94+5#453#448
24M → 40K163+13#448#435
40K → 25.2M41+3#435#432
25.2M → Finish161+15#432#417
TOTALS219116+103

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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