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BOSTON MARATHON 2025

Bartosz Olszewski

Bib: 900 M PL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 0.7%
Gender (Male)
#0 / 16105
Top 1%
Masters (Masters Men)
#0 / 10463
Top 0.1%
Division (M40-44)
#0 / 2247
Top 0.4%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
5:38/mi
17:30
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
5:36/mi
34:53
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
5:39/mi
52:27
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
5:42/mi
1:10:11
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
5:33/mi
1:13:58
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
5:41/mi
1:27:45
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
5:45/mi
1:45:37
↑ 181↓ 1480.2%
138 ft elev
20M
5:48/mi
1:53:30
↑ 64↓ 500.2%
148 ft elev
21M
6:07/mi
1:59:37
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
5:36/mi
2:03:48
↑ 17↓ 861.7%
156 ft elev
23M
5:46/mi
2:11:01
↑ 23↓ 630.6%
116 ft elev
24M
5:40/mi
2:16:41
↓ 821.3%
34 ft elev
40K· 24.85 mi
5:52/mi
2:21:42
↓ 200.3%
20 ft elev
25.2M
6:23/mi
2:23:54
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
5:47/mi
2:29:48
↑ 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
1:13:585:39 /mi⚡ faster
2nd Half
1:15:505:47 /mi+2.5%
Positive split — 2.5% 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
17:305:383.11 mi17:30
5:38
-
10K
34:535:373.10 mi17:23
5:36
-0:02
15K
52:275:383.11 mi17:34
5:39
+0:03
20K
1:10:115:393.11 mi17:44
5:42
+0:03
Half(13.11 mi)
1:13:585:390.68 mi3:47
5:33
-0:09
25K
1:27:455:392.42 mi13:47
5:41
+0:08
30K
1:45:375:403.11 mi17:52
5:45
+0:04
20M
1:53:305:401.36 mi7:53
5:48
+0:03
21M
1:59:375:421.00 mi6:07
6:07
+0:19
35K
2:03:485:420.75 mi4:11
5:36
-0:31
23M
2:11:015:421.25 mi7:13
5:46
+0:10
24M
2:16:415:421.00 mi5:40
5:40
-0:06
40K
2:21:425:420.85 mi5:01
5:52
+0:12
25.2M
2:23:545:430.35 mi2:12
6:23
+0:31
Finish(26.22 mi)
2:29:485:431.02 mi5:54
5:47
-0:36
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

5:33 /mi

Average Pace

5:43 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:21:29

94% of race

Time at Steady Pace

8:19

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:43 /mi

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

Heatmap

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi332300300308280280
10K6.21 mi3.10 mi308+24279+21279+21294265265
15K9.32 mi3.11 mi299+9270+9270+9308280280
20K12.43 mi3.11 mi307-8278-8278-8324295295
Half13.11 mi0.68 mi301+6272+6272+6231207207
25K15.53 mi2.42 mi292+9264+8264+8268242242
30K18.64 mi3.11 mi264+28238+26238+26205183183
20M20.00 mi1.36 mi253+11229+9229+9188171171
21M21.00 mi1.00 mi234+19211+18211+18202187187
35K21.75 mi0.75 mi227+7205+6205+6174158158
23M23.00 mi1.25 mi209+18187+18187+18136127127
24M24.00 mi1.00 mi198+11177+10177+10164151151
40K24.85 mi0.85 mi196+2175+2175+2240220220
25.2M25.20 mi0.35 mi192+4171+4171+4283261261
Finish26.22 mi1.02 mi195-3173-2173-2485454454

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21story building
+97ft-345ft

Overall

308

Males

280

M40-44

280

5K→10K

3.1 - 6.2 mi

Top 1%
×5story building
+79ft-138ft

Overall

294

Males

265

M40-44

265

10K→15K

6.2 - 9.3 mi

Top 1%
×3story building
+67ft-78ft

Overall

308

Males

280

M40-44

280

15K→20K

9.3 - 12.4 mi

Top 1%
×5story building
+106ft-86ft

Overall

324

Males

295

M40-44

295

20K→Half

12.4 - 13.1 mi

Top 0.8%
×2story building
+19ft-37ft

Overall

231

Males

207

M40-44

207

Half→25K

13.1 - 15.5 mi

Top 0.9%
×4story building
+66ft-88ft

Overall

268

Males

242

M40-44

242

25K→30K

15.5 - 18.6 mi

Top 0.7%
×9story building
+181ft-148ft

Overall

205

Males

183

M40-44

183

30K→20M

18.6 - 20.0 mi

Top 0.7%
×5story building
+64ft-50ft

Overall

188

Males

171

M40-44

171

20M→21M

20.0 - 21.0 mi

Top 0.7%
×8story building
+106ft-24ft

Overall

202

Males

187

M40-44

187

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7story building
+17ft-86ft

Overall

174

Males

158

M40-44

158

35K→23M

21.8 - 23.0 mi

Top 0.5%
×5story building
+23ft-63ft

Overall

136

Males

127

M40-44

127

23M→24M

23.0 - 24.0 mi

Top 0.6%
×6story building
+12ft-82ft

Overall

164

Males

151

M40-44

151

24M→40K

24.0 - 24.9 mi

Top 0.8%
×1story
+6ft-20ft

Overall

240

Males

220

M40-44

220

40K→25.2M

24.9 - 25.2 mi

Top 1.0%
×1story
+13ft-16ft

Overall

283

Males

261

M40-44

261

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

485

Males

454

M40-44

454

Passing Analysis

Category:
Athletes Passed
193
Passed By
56
Net Change
+137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#332
5K → 10K306+24#332#308
10K → 15K178+9#308#299
15K → 20K1119-8#299#307
20K → Half60+6#307#301
Half → 25K134+9#301#292
25K → 30K313+28#292#264
30K → 20M154+11#264#253
20M → 21M190+19#253#234
21M → 35K81+7#234#227
35K → 23M180+18#227#209
23M → 24M110+11#209#198
24M → 40K42+2#198#196
40K → 25.2M51+4#196#192
25.2M → Finish58-3#192#195
TOTALS19356+137

Passing Charts

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Passing Circle

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Position Flow

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Race Lanes

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