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BOSTON MARATHON 2025

John Olson

Bib: 755•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 1%
Gender (Male)
#0 / 16105
Top 2%
Division (M18-39)
#0 / 5642
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:45
Rank: #450
Start → 5K
17:45 | 5:43/mi
10K· 6.21 mi
35:45
Rank: #532 (-82)
5K → 10K
18:00 | 5:48/mi
15K· 9.32 mi
53:52
Rank: #537 (-5)
10K → 15K
18:07 | 5:50/mi
20K· 12.43 mi
1:11:51
Rank: #498 (+39)
15K → 20K
17:59 | 5:47/mi
Half· 13.11 mi
1:15:43
Rank: #492 (+6)
20K → Half
3:52 | 5:40/mi
25K· 15.53 mi
1:29:35
Rank: #450 (+42)
Half → 25K
13:52 | 5:43/mi
30K· 18.64 mi
1:47:34
Rank: #395 (+55)
25K → 30K
17:59 | 5:47/mi
20M
1:55:32
Rank: #374 (+21)
30K → 20M
7:58 | 5:52/mi
21M
2:01:33
Rank: #342 (+32)
20M → 21M
6:01 | 6:01/mi
35K· 21.75 mi
2:05:49
Rank: #337 (+5)
21M → 35K
4:16 | 5:42/mi
23M
2:13:16
Rank: #318 (+19)
35K → 23M
7:27 | 5:57/mi
24M
2:19:13
Rank: #312 (+6)
23M → 24M
5:57 | 5:57/mi
40K· 24.85 mi
2:24:33
Rank: #314 (-2)
24M → 40K
5:20 | 6:14/mi
25.2M
2:26:51
Rank: #314
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:32:57
Rank: #320 (-6)
25.2M → Finish
6:06 | 5:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:43
Pace5:47 /mi
2nd Half
Distance13.11 mi
Time1:17:14
Pace5:53 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:5317:455:4317:45
5:43
-
10K
6.21 mi10:35:5335:455:4518:00
5:48
+0:05
15K
9.32 mi10:54:0053:525:4718:07
5:50
+0:02
20K
12.43 mi11:11:591:11:515:4717:59
5:47
-0:03
Half
13.11 mi11:15:511:15:435:473:52
5:40
-0:07
25K
15.53 mi11:29:431:29:355:4613:52
5:43
+0:03
30K
18.64 mi11:47:421:47:345:4617:59
5:47
+0:04
20M
20.00 mi11:55:401:55:325:477:58
5:52
+0:05
21M
21.00 mi12:01:412:01:335:476:01
6:01
+0:09
35K
21.75 mi12:05:572:05:495:474:16
5:42
-0:19
23M
23.00 mi12:13:242:13:165:487:27
5:57
+0:15
24M
24.00 mi12:19:212:19:135:485:57
5:57
0:00
40K
24.85 mi12:24:412:24:335:495:20
6:14
+0:17
25.2M
25.20 mi12:26:592:26:515:502:18
6:40
+0:26
Finish
26.22 mi12:33:052:32:575:506:06
5:59
-0:41

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

5:40 /mi

Average Pace

5:50 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:39

98% of race

Time at Steady Pace

2:18

2% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:50 /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 mi10:17:5317:455:4317:45
5:43
#450
10K
6.21 mi10:35:5335:455:4518:00
5:48
#532
15K
9.32 mi10:54:0053:525:4718:07
5:50
#537
20K
12.43 mi11:11:591:11:515:4717:59
5:47
#498
Half
13.11 mi11:15:511:15:435:473:52
5:40
#492
25K
15.53 mi11:29:431:29:355:4613:52
5:43
#450
30K
18.64 mi11:47:421:47:345:4617:59
5:47
#395
20M
20.00 mi11:55:401:55:325:477:58
5:52
#374
21M
21.00 mi12:01:412:01:335:476:01
6:01
#342
35K
21.75 mi12:05:572:05:495:474:16
5:42
#337
23M
23.00 mi12:13:242:13:165:487:27
5:57
#318
24M
24.00 mi12:19:212:19:135:485:57
5:57
#312
40K
24.85 mi12:24:412:24:335:495:20
6:14
#314
25.2M
25.20 mi12:26:592:26:515:502:18
6:40
#314
Finish
26.22 mi12:33:052:32:575:506:06
5:59
#320
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi450412412585(Top 2%)544(Top 3%)544(Top 10%)
10K6.21 mi3.10 mi532-82494-82494-82589(Top 2%)550(Top 3%)550(Top 10%)
15K9.32 mi3.11 mi537-5498-4498-4585(Top 2%)544(Top 3%)544(Top 10%)
20K12.43 mi3.11 mi498+39462+36462+36425(Top 1%)395(Top 2%)395(Top 7%)
Half13.11 mi0.68 mi492+6456+6456+6385(Top 1%)358(Top 2%)358(Top 6%)
25K15.53 mi2.42 mi450+42415+41415+41307(Top 1%)281(Top 2%)281(Top 5%)
30K18.64 mi3.11 mi395+55363+52363+52237(Top 0.8%)215(Top 1%)215(Top 4%)
20M20.00 mi1.36 mi374+21344+19344+19236(Top 0.8%)217(Top 1%)217(Top 4%)
21M21.00 mi1.00 mi342+32313+31313+31133(Top 0.5%)125(Top 0.8%)125(Top 2%)
35K21.75 mi0.75 mi337+5308+5308+5267(Top 0.9%)246(Top 2%)246(Top 4%)
23M23.00 mi1.25 mi318+19292+16292+16286(Top 1%)266(Top 2%)266(Top 5%)
24M24.00 mi1.00 mi312+6285+7285+7480(Top 2%)444(Top 3%)444(Top 8%)
40K24.85 mi0.85 mi314-2287-2287-2791(Top 3%)740(Top 5%)740(Top 13%)
25.2M25.20 mi0.35 mi314287287681(Top 2%)631(Top 4%)631(Top 11%)
Finish26.22 mi1.02 mi320-6293-6293-6862(Top 3%)811(Top 5%)811(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

585

Males

544

M18-39

544

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

589

Males

550

M18-39

550

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

585

Males

544

M18-39

544

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

425

Males

395

M18-39

395

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

385

Males

358

M18-39

358

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

307

Males

281

M18-39

281

25K→30K

15.5 - 18.6 mi

Top 0.8%
×9stories
+181ft-148ft

Overall

237

Males

215

M18-39

215

30K→20M

18.6 - 20.0 mi

Top 0.8%
×5stories
+64ft-50ft

Overall

236

Males

217

M18-39

217

20M→21M

20.0 - 21.0 mi

Top 0.5%
×8stories
+106ft-24ft

Overall

133

Males

125

M18-39

125

21M→35K

21.0 - 21.8 mi

Top 0.9%
×7stories
+17ft-86ft

Overall

267

Males

246

M18-39

246

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

286

Males

266

M18-39

266

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

480

Males

444

M18-39

444

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

791

Males

740

M18-39

740

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

681

Males

631

M18-39

631

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

862

Males

811

M18-39

811

Passing Analysis

Category:
Athletes Passed
281
Passed By
151
Net Change
+130
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#450
5K → 10K587-82#450#532
10K → 15K1621-5#532#537
15K → 20K401+39#537#498
20K → Half60+6#498#492
Half → 25K431+42#492#450
25K → 30K583+55#450#395
30K → 20M232+21#395#374
20M → 21M320+32#374#342
21M → 35K61+5#342#337
35K → 23M223+19#337#318
23M → 24M148+6#318#312
24M → 40K79-2#312#314
40K → 25.2M550#314#314
25.2M → Finish410-6#314#320
TOTALS281151+130
📊

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