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BOSTON MARATHON 2025

Mark Corbyn

Bib: 6108•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 30%
Masters (Masters Men)
#0 / 10463
Top 16%
Division (M40-44)
#0 / 2247
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:50
Rank: #5497
Start → 5K
20:50 | 6:42/mi
10K· 6.21 mi
41:40
Rank: #5421 (+76)
5K → 10K
20:50 | 6:42/mi
15K· 9.32 mi
1:02:03
Rank: #4858 (+563)
10K → 15K
20:23 | 6:34/mi
20K· 12.43 mi
1:22:36
Rank: #4529 (+329)
15K → 20K
20:33 | 6:37/mi
Half· 13.11 mi
1:27:05
Rank: #4510 (+19)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:43:29
Rank: #4480 (+30)
Half → 25K
16:24 | 6:46/mi
30K· 18.64 mi
2:05:07
Rank: #4414 (+66)
25K → 30K
21:38 | 6:58/mi
20M
2:14:57
Rank: #4493 (-79)
30K → 20M
9:50 | 7:14/mi
21M
2:22:19
Rank: #4433 (+60)
20M → 21M
7:22 | 7:22/mi
35K· 21.75 mi
2:27:35
Rank: #4445 (-12)
21M → 35K
5:16 | 7:02/mi
23M
2:39:38
Rank: #5447 (-1002)
35K → 23M
12:03 | 9:37/mi
24M
2:47:19
Rank: #5518 (-71)
23M → 24M
7:41 | 7:41/mi
40K· 24.85 mi
2:53:40
Rank: #5490 (+28)
24M → 40K
6:21 | 7:26/mi
25.2M
2:56:16
Rank: #5430 (+60)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:03:05
Rank: #5332 (+98)
25.2M → Finish
6:49 | 6:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:05
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:36:00
Pace7:19 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:5520:506:4220:50
6:42
-
10K
6.21 mi10:46:4541:406:4220:50
6:42
0:00
15K
9.32 mi11:07:081:02:036:3920:23
6:34
-0:08
20K
12.43 mi11:27:411:22:366:3920:33
6:37
+0:03
Half
13.11 mi11:32:101:27:056:394:29
6:34
-0:03
25K
15.53 mi11:48:341:43:296:4016:24
6:46
+0:12
30K
18.64 mi12:10:122:05:076:4321:38
6:58
+0:12
20M
20.00 mi12:20:022:14:576:459:50
7:14
+0:16
21M
21.00 mi12:27:242:22:196:477:22
7:22
+0:08
35K
21.75 mi12:32:402:27:356:475:16
7:02
-0:20
23M
23.00 mi12:44:432:39:386:5612:03
9:37
+2:35
24M
24.00 mi12:52:242:47:196:587:41
7:41
-1:56
40K
24.85 mi12:58:452:53:406:596:21
7:26
-0:15
25.2M
25.20 mi13:01:212:56:167:002:36
7:32
+0:06
Finish
26.22 mi13:08:103:03:056:596:49
6:41
-0:51

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

6:34 /mi

Average Pace

6:59 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:52

14% of race

Time at Steady Pace

2:02:10

67% of race

Time at Slower Pace

36:03

20% of race

Average Pace: 6:59 /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 mi10:25:5520:506:4220:50
6:42
#5497
10K
6.21 mi10:46:4541:406:4220:50
6:42
#5421
15K
9.32 mi11:07:081:02:036:3920:23
6:34
#4858
20K
12.43 mi11:27:411:22:366:3920:33
6:37
#4529
Half
13.11 mi11:32:101:27:056:394:29
6:34
#4510
25K
15.53 mi11:48:341:43:296:4016:24
6:46
#4480
30K
18.64 mi12:10:122:05:076:4321:38
6:58
#4414
20M
20.00 mi12:20:022:14:576:459:50
7:14
#4493
21M
21.00 mi12:27:242:22:196:477:22
7:22
#4433
35K
21.75 mi12:32:402:27:356:475:16
7:02
#4445
23M
23.00 mi12:44:432:39:386:5612:03
9:37
#5447
24M
24.00 mi12:52:242:47:196:587:41
7:41
#5518
40K
24.85 mi12:58:452:53:406:596:21
7:26
#5490
25.2M
25.20 mi13:01:212:56:167:002:36
7:32
#5430
Finish
26.22 mi13:08:103:03:056:596:49
6:41
#5332
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5497509950993962(Top 14%)3734(Top 23%)3734(Top 166%)
10K6.21 mi3.10 mi5421+765020+795020+795393(Top 19%)4985(Top 31%)4985(Top 222%)
15K9.32 mi3.11 mi4858+5634538+4824538+4823962(Top 14%)3734(Top 23%)3734(Top 166%)
20K12.43 mi3.11 mi4529+3294242+2964242+2963804(Top 13%)3589(Top 22%)3589(Top 160%)
Half13.11 mi0.68 mi4510+194226+164226+164227(Top 15%)3966(Top 25%)3966(Top 177%)
25K15.53 mi2.42 mi4480+304193+334193+334610(Top 16%)4255(Top 26%)4255(Top 189%)
30K18.64 mi3.11 mi4414+664125+684125+684483(Top 16%)4101(Top 25%)4101(Top 183%)
20M20.00 mi1.36 mi4493-794177-524177-525406(Top 19%)4781(Top 30%)4781(Top 213%)
21M21.00 mi1.00 mi4433+604115+624115+623963(Top 14%)3598(Top 22%)3598(Top 160%)
35K21.75 mi0.75 mi4445-124122-74122-75630(Top 20%)4818(Top 30%)4818(Top 214%)
23M23.00 mi1.25 mi5447-10024955-8334955-83319154(Top 67%)11510(Top 71%)11510(Top 512%)
24M24.00 mi1.00 mi5518-714993-384993-388980(Top 32%)6631(Top 41%)6631(Top 295%)
40K24.85 mi0.85 mi5490+284959+344959+346350(Top 22%)5059(Top 31%)5059(Top 225%)
25.2M25.20 mi0.35 mi5430+604906+534906+533622(Top 13%)3166(Top 20%)3166(Top 141%)
Finish26.22 mi1.02 mi5332+984813+934813+933819(Top 13%)3307(Top 21%)3307(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3962

Males

3734

M40-44

3734

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5393

Males

4985

M40-44

4985

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3962

Males

3734

M40-44

3734

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3804

Males

3589

M40-44

3589

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4227

Males

3966

M40-44

3966

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4610

Males

4255

M40-44

4255

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4483

Males

4101

M40-44

4101

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5406

Males

4781

M40-44

4781

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3963

Males

3598

M40-44

3598

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5630

Males

4818

M40-44

4818

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

19154

Males

11510

M40-44

11510

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8980

Males

6631

M40-44

6631

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6350

Males

5059

M40-44

5059

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3622

Males

3166

M40-44

3166

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3819

Males

3307

M40-44

3307

Passing Analysis

Category:
Athletes Passed
1912
Passed By
1747
Net Change
+165
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5497
5K → 10K228152+76#5497#5421
10K → 15K5696+563#5421#4858
15K → 20K34011+329#4858#4529
20K → Half256+19#4529#4510
Half → 25K12696+30#4510#4480
25K → 30K173107+66#4480#4414
30K → 20M44123-79#4414#4493
20M → 21M9838+60#4493#4433
21M → 35K4557-12#4433#4445
35K → 23M91011-1002#4445#5447
23M → 24M2798-71#5447#5518
24M → 40K5931+28#5518#5490
40K → 25.2M633+60#5490#5430
25.2M → Finish1068+98#5430#5332
TOTALS19121747+165
📊

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