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BOSTON MARATHON 2025

Bartosz Olszewski

Bib: 900•M

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

Start
0:00:00
Race begins
5K· 3.11 mi
17:30
Rank: #332
Start → 5K
17:30 | 5:38/mi
10K· 6.21 mi
34:53
Rank: #308 (+24)
5K → 10K
17:23 | 5:36/mi
15K· 9.32 mi
52:27
Rank: #299 (+9)
10K → 15K
17:34 | 5:39/mi
20K· 12.43 mi
1:10:11
Rank: #307 (-8)
15K → 20K
17:44 | 5:42/mi
Half· 13.11 mi
1:13:58
Rank: #301 (+6)
20K → Half
3:47 | 5:33/mi
25K· 15.53 mi
1:27:45
Rank: #292 (+9)
Half → 25K
13:47 | 5:41/mi
30K· 18.64 mi
1:45:37
Rank: #264 (+28)
25K → 30K
17:52 | 5:45/mi
20M
1:53:30
Rank: #253 (+11)
30K → 20M
7:53 | 5:48/mi
21M
1:59:37
Rank: #234 (+19)
20M → 21M
6:07 | 6:07/mi
35K· 21.75 mi
2:03:48
Rank: #227 (+7)
21M → 35K
4:11 | 5:36/mi
23M
2:11:01
Rank: #209 (+18)
35K → 23M
7:13 | 5:46/mi
24M
2:16:41
Rank: #198 (+11)
23M → 24M
5:40 | 5:40/mi
40K· 24.85 mi
2:21:42
Rank: #196 (+2)
24M → 40K
5:01 | 5:52/mi
25.2M
2:23:54
Rank: #192 (+4)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:29:48
Rank: #195 (-3)
25.2M → Finish
5:54 | 5:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:13:58
Pace5:39 /mi
2nd Half
Distance13.11 mi
Time1:15:50
Pace5:47 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:3617:305:3817:30
5:38
-
10K
6.21 mi10:34:5934:535:3717:23
5:36
-0:02
15K
9.32 mi10:52:3352:275:3817:34
5:39
+0:03
20K
12.43 mi11:10:171:10:115:3917:44
5:42
+0:03
Half
13.11 mi11:14:041:13:585:393:47
5:33
-0:09
25K
15.53 mi11:27:511:27:455:3913:47
5:41
+0:08
30K
18.64 mi11:45:431:45:375:4017:52
5:45
+0:04
20M
20.00 mi11:53:361:53:305:407:53
5:48
+0:03
21M
21.00 mi11:59:431:59:375:426:07
6:07
+0:19
35K
21.75 mi12:03:542:03:485:424:11
5:36
-0:31
23M
23.00 mi12:11:072:11:015:427:13
5:46
+0:10
24M
24.00 mi12:16:472:16:415:425:40
5:40
-0:06
40K
24.85 mi12:21:482:21:425:425:01
5:52
+0:12
25.2M
25.20 mi12:24:002:23:545:432:12
6:23
+0:31
Finish
26.22 mi12:29:542:29:485:435:54
5:47
-0:36

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

5:33 /mi

Average Pace

5:43 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

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

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 mi10:17:3617:305:3817:30
5:38
#332
10K
6.21 mi10:34:5934:535:3717:23
5:36
#308
15K
9.32 mi10:52:3352:275:3817:34
5:39
#299
20K
12.43 mi11:10:171:10:115:3917:44
5:42
#307
Half
13.11 mi11:14:041:13:585:393:47
5:33
#301
25K
15.53 mi11:27:511:27:455:3913:47
5:41
#292
30K
18.64 mi11:45:431:45:375:4017:52
5:45
#264
20M
20.00 mi11:53:361:53:305:407:53
5:48
#253
21M
21.00 mi11:59:431:59:375:426:07
6:07
#234
35K
21.75 mi12:03:542:03:485:424:11
5:36
#227
23M
23.00 mi12:11:072:11:015:427:13
5:46
#209
24M
24.00 mi12:16:472:16:415:425:40
5:40
#198
40K
24.85 mi12:21:482:21:425:425:01
5:52
#196
25.2M
25.20 mi12:24:002:23:545:432:12
6:23
#192
Finish
26.22 mi12:29:542:29:485:435:54
5:47
#195
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi332300300308(Top 1%)280(Top 2%)280(Top 12%)
10K6.21 mi3.10 mi308+24279+21279+21294(Top 1%)265(Top 2%)265(Top 12%)
15K9.32 mi3.11 mi299+9270+9270+9308(Top 1%)280(Top 2%)280(Top 12%)
20K12.43 mi3.11 mi307-8278-8278-8324(Top 1%)295(Top 2%)295(Top 13%)
Half13.11 mi0.68 mi301+6272+6272+6231(Top 0.8%)207(Top 1%)207(Top 9%)
25K15.53 mi2.42 mi292+9264+8264+8268(Top 0.9%)242(Top 2%)242(Top 11%)
30K18.64 mi3.11 mi264+28238+26238+26205(Top 0.7%)183(Top 1%)183(Top 8%)
20M20.00 mi1.36 mi253+11229+9229+9188(Top 0.7%)171(Top 1%)171(Top 8%)
21M21.00 mi1.00 mi234+19211+18211+18202(Top 0.7%)187(Top 1%)187(Top 8%)
35K21.75 mi0.75 mi227+7205+6205+6174(Top 0.6%)158(Top 1.0%)158(Top 7%)
23M23.00 mi1.25 mi209+18187+18187+18136(Top 0.5%)127(Top 0.8%)127(Top 6%)
24M24.00 mi1.00 mi198+11177+10177+10164(Top 0.6%)151(Top 0.9%)151(Top 7%)
40K24.85 mi0.85 mi196+2175+2175+2240(Top 0.8%)220(Top 1%)220(Top 10%)
25.2M25.20 mi0.35 mi192+4171+4171+4283(Top 1.0%)261(Top 2%)261(Top 12%)
Finish26.22 mi1.02 mi195-3173-2173-2485(Top 2%)454(Top 3%)454(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

308

Males

280

M40-44

280

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

294

Males

265

M40-44

265

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

308

Males

280

M40-44

280

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

324

Males

295

M40-44

295

20K→Half

12.4 - 13.1 mi

Top 0.8%
×2stories
+19ft-37ft

Overall

231

Males

207

M40-44

207

Half→25K

13.1 - 15.5 mi

Top 0.9%
×4stories
+66ft-88ft

Overall

268

Males

242

M40-44

242

25K→30K

15.5 - 18.6 mi

Top 0.7%
×9stories
+181ft-148ft

Overall

205

Males

183

M40-44

183

30K→20M

18.6 - 20.0 mi

Top 0.7%
×5stories
+64ft-50ft

Overall

188

Males

171

M40-44

171

20M→21M

20.0 - 21.0 mi

Top 0.7%
×8stories
+106ft-24ft

Overall

202

Males

187

M40-44

187

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7stories
+17ft-86ft

Overall

174

Males

158

M40-44

158

35K→23M

21.8 - 23.0 mi

Top 0.5%
×5stories
+23ft-63ft

Overall

136

Males

127

M40-44

127

23M→24M

23.0 - 24.0 mi

Top 0.6%
×6stories
+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%
×2stories
+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 Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing