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BOSTON MARATHON 2025

James Mountford

Bib: 528•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 1%
Gender (Male)
#0 / 16105
Top 2%
Masters (Masters Men)
#0 / 10463
Top 0.3%
Division (M40-44)
#0 / 2247
Top 1.0%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:10
Rank: #703
Start → 5K
18:10 | 5:51/mi
10K· 6.21 mi
35:50
Rank: #543 (+160)
5K → 10K
17:40 | 5:41/mi
15K· 9.32 mi
53:37
Rank: #510 (+33)
10K → 15K
17:47 | 5:43/mi
20K· 12.43 mi
1:11:35
Rank: #475 (+35)
15K → 20K
17:58 | 5:47/mi
Half· 13.11 mi
1:15:28
Rank: #469 (+6)
20K → Half
3:53 | 5:42/mi
25K· 15.53 mi
1:29:26
Rank: #434 (+35)
Half → 25K
13:58 | 5:46/mi
30K· 18.64 mi
1:47:40
Rank: #403 (+31)
25K → 30K
18:14 | 5:52/mi
20M
1:55:43
Rank: #385 (+18)
30K → 20M
8:03 | 5:55/mi
21M
2:02:00
Rank: #374 (+11)
20M → 21M
6:17 | 6:17/mi
35K· 21.75 mi
2:06:18
Rank: #370 (+4)
21M → 35K
4:18 | 5:45/mi
23M
2:13:43
Rank: #348 (+22)
35K → 23M
7:25 | 5:55/mi
24M
2:19:32
Rank: #335 (+13)
23M → 24M
5:49 | 5:49/mi
40K· 24.85 mi
2:24:39
Rank: #322 (+13)
24M → 40K
5:07 | 5:59/mi
25.2M
2:26:53
Rank: #318 (+4)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:32:50
Rank: #312 (+6)
25.2M → Finish
5:57 | 5:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:28
Pace5:45 /mi
2nd Half
Distance13.11 mi
Time1:17:22
Pace5:54 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1518:105:5118:10
5:51
-
10K
6.21 mi10:35:5535:505:4617:40
5:41
-0:10
15K
9.32 mi10:53:4253:375:4517:47
5:43
+0:02
20K
12.43 mi11:11:401:11:355:4617:58
5:47
+0:04
Half
13.11 mi11:15:331:15:285:453:53
5:42
-0:05
25K
15.53 mi11:29:311:29:265:4513:58
5:46
+0:04
30K
18.64 mi11:47:451:47:405:4718:14
5:52
+0:06
20M
20.00 mi11:55:481:55:435:478:03
5:55
+0:03
21M
21.00 mi12:02:052:02:005:496:17
6:17
+0:22
35K
21.75 mi12:06:232:06:185:484:18
5:45
-0:32
23M
23.00 mi12:13:482:13:435:497:25
5:55
+0:10
24M
24.00 mi12:19:372:19:325:495:49
5:49
-0:06
40K
24.85 mi12:24:442:24:395:495:07
5:59
+0:10
25.2M
25.20 mi12:26:582:26:535:502:14
6:29
+0:30
Finish
26.22 mi12:32:552:32:505:505:57
5:50
-0:39

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

5:41 /mi

Average Pace

5:50 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:19

94% of race

Time at Steady Pace

8:31

6% 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 mi10:18:1518:105:5118:10
5:51
#703
10K
6.21 mi10:35:5535:505:4617:40
5:41
#543
15K
9.32 mi10:53:4253:375:4517:47
5:43
#510
20K
12.43 mi11:11:401:11:355:4617:58
5:47
#475
Half
13.11 mi11:15:331:15:285:453:53
5:42
#469
25K
15.53 mi11:29:311:29:265:4513:58
5:46
#434
30K
18.64 mi11:47:451:47:405:4718:14
5:52
#403
20M
20.00 mi11:55:481:55:435:478:03
5:55
#385
21M
21.00 mi12:02:052:02:005:496:17
6:17
#374
35K
21.75 mi12:06:232:06:185:484:18
5:45
#370
23M
23.00 mi12:13:482:13:435:497:25
5:55
#348
24M
24.00 mi12:19:372:19:325:495:49
5:49
#335
40K
24.85 mi12:24:442:24:395:495:07
5:59
#322
25.2M
25.20 mi12:26:582:26:535:502:14
6:29
#318
Finish
26.22 mi12:32:552:32:505:505:57
5:50
#312
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi703653653408(Top 1%)378(Top 2%)378(Top 17%)
10K6.21 mi3.10 mi543+160505+148505+148420(Top 1%)386(Top 2%)386(Top 17%)
15K9.32 mi3.11 mi510+33473+32473+32408(Top 1%)378(Top 2%)378(Top 17%)
20K12.43 mi3.11 mi475+35439+34439+34417(Top 1%)388(Top 2%)388(Top 17%)
Half13.11 mi0.68 mi469+6433+6433+6404(Top 1%)377(Top 2%)377(Top 17%)
25K15.53 mi2.42 mi434+35400+33400+33360(Top 1%)334(Top 2%)334(Top 15%)
30K18.64 mi3.11 mi403+31370+30370+30314(Top 1%)290(Top 2%)290(Top 13%)
20M20.00 mi1.36 mi385+18354+16354+16294(Top 1%)271(Top 2%)271(Top 12%)
21M21.00 mi1.00 mi374+11344+10344+10346(Top 1%)323(Top 2%)323(Top 14%)
35K21.75 mi0.75 mi370+4340+4340+4318(Top 1%)296(Top 2%)296(Top 13%)
23M23.00 mi1.25 mi348+22321+19321+19262(Top 0.9%)243(Top 2%)243(Top 11%)
24M24.00 mi1.00 mi335+13308+13308+13290(Top 1%)268(Top 2%)268(Top 12%)
40K24.85 mi0.85 mi322+13295+13295+13363(Top 1%)336(Top 2%)336(Top 15%)
25.2M25.20 mi0.35 mi318+4291+4291+4402(Top 1%)369(Top 2%)369(Top 16%)
Finish26.22 mi1.02 mi312+6286+5286+5563(Top 2%)527(Top 3%)527(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

408

Males

378

M40-44

378

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

420

Males

386

M40-44

386

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

408

Males

378

M40-44

378

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

417

Males

388

M40-44

388

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

404

Males

377

M40-44

377

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

360

Males

334

M40-44

334

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

314

Males

290

M40-44

290

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

294

Males

271

M40-44

271

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

346

Males

323

M40-44

323

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

318

Males

296

M40-44

296

35K→23M

21.8 - 23.0 mi

Top 0.9%
×5stories
+23ft-63ft

Overall

262

Males

243

M40-44

243

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

290

Males

268

M40-44

268

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

363

Males

336

M40-44

336

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

402

Males

369

M40-44

369

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

563

Males

527

M40-44

527

Passing Analysis

Category:
Athletes Passed
430
Passed By
39
Net Change
+391
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#703
5K → 10K1611+160#703#543
10K → 15K385+33#543#510
15K → 20K394+35#510#475
20K → Half60+6#475#469
Half → 25K350+35#469#434
25K → 30K387+31#434#403
30K → 20M191+18#403#385
20M → 21M154+11#385#374
21M → 35K95+4#374#370
35K → 23M231+22#370#348
23M → 24M152+13#348#335
24M → 40K163+13#335#322
40K → 25.2M73+4#322#318
25.2M → Finish93+6#318#312
TOTALS43039+391
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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