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BOSTON MARATHON 2025

Mark Shelton

Bib: 26352•M

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:33
Rank: #18255
Start → 5K
25:33 | 8:13/mi
10K· 6.21 mi
49:58
Rank: #16837 (+1418)
5K → 10K
24:25 | 7:52/mi
15K· 9.32 mi
1:14:36
Rank: #16360 (+477)
10K → 15K
24:38 | 7:56/mi
20K· 12.43 mi
1:39:48
Rank: #16172 (+188)
15K → 20K
25:12 | 8:07/mi
Half· 13.11 mi
1:45:20
Rank: #16193 (-21)
20K → Half
5:32 | 8:07/mi
25K· 15.53 mi
2:05:16
Rank: #16050 (+143)
Half → 25K
19:56 | 8:13/mi
30K· 18.64 mi
2:32:39
Rank: #16145 (-95)
25K → 30K
27:23 | 8:49/mi
20M
2:45:07
Rank: #16229 (-84)
30K → 20M
12:28 | 9:10/mi
21M
2:55:07
Rank: #16315 (-86)
20M → 21M
10:00 | 10:00/mi
35K· 21.75 mi
3:01:38
Rank: #16293 (+22)
21M → 35K
6:31 | 8:43/mi
23M
3:12:52
Rank: #16232 (+61)
35K → 23M
11:14 | 8:58/mi
24M
3:22:30
Rank: #16468 (-236)
23M → 24M
9:38 | 9:38/mi
40K· 24.85 mi
3:31:06
Rank: #16691 (-223)
24M → 40K
8:36 | 10:04/mi
25.2M
3:34:59
Rank: #16807 (-116)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
3:44:06
Rank: #16932 (-125)
25.2M → Finish
9:07 | 8:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:20
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time1:58:46
Pace9:04 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5425:338:1325:33
8:13
-
10K
6.21 mi12:05:1949:588:0224:25
7:52
-0:21
15K
9.32 mi12:29:571:14:368:0024:38
7:56
+0:04
20K
12.43 mi12:55:091:39:488:0225:12
8:07
+0:11
Half
13.11 mi13:00:411:45:208:025:32
8:07
0:00
25K
15.53 mi13:20:372:05:168:0419:56
8:13
+0:06
30K
18.64 mi13:48:002:32:398:1127:23
8:49
+0:36
20M
20.00 mi14:00:282:45:078:1512:28
9:10
+0:21
21M
21.00 mi14:10:282:55:078:2010:00
10:00
+0:50
35K
21.75 mi14:16:593:01:388:216:31
8:43
-1:17
23M
23.00 mi14:28:133:12:528:2311:14
8:58
+0:15
24M
24.00 mi14:37:513:22:308:269:38
9:38
+0:40
40K
24.85 mi14:46:273:31:068:308:36
10:04
+0:26
25.2M
25.20 mi14:50:203:34:598:323:53
11:16
+1:12
Finish
26.22 mi14:59:273:44:068:339:07
8:57
-2:19

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

7:52 /mi

Average Pace

8:33 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:16

56% of race

Time at Steady Pace

1:06:43

30% of race

Time at Slower Pace

32:07

14% of race

Average Pace: 8:33 /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 mi11:40:5425:338:1325:33
8:13
#18255
10K
6.21 mi12:05:1949:588:0224:25
7:52
#16837
15K
9.32 mi12:29:571:14:368:0024:38
7:56
#16360
20K
12.43 mi12:55:091:39:488:0225:12
8:07
#16172
Half
13.11 mi13:00:411:45:208:025:32
8:07
#16193
25K
15.53 mi13:20:372:05:168:0419:56
8:13
#16050
30K
18.64 mi13:48:002:32:398:1127:23
8:49
#16145
20M
20.00 mi14:00:282:45:078:1512:28
9:10
#16229
21M
21.00 mi14:10:282:55:078:2010:00
10:00
#16315
35K
21.75 mi14:16:593:01:388:216:31
8:43
#16293
23M
23.00 mi14:28:133:12:528:2311:14
8:58
#16232
24M
24.00 mi14:37:513:22:308:269:38
9:38
#16468
40K
24.85 mi14:46:273:31:068:308:36
10:04
#16691
25.2M
25.20 mi14:50:203:34:598:323:53
11:16
#16807
Finish
26.22 mi14:59:273:44:068:339:07
8:57
#16932
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi18255117041170415460(Top 54%)10578(Top 66%)10578(Top 642%)
10K6.21 mi3.10 mi16837+141811155+54911155+54915338(Top 54%)10549(Top 66%)10549(Top 640%)
15K9.32 mi3.11 mi16360+47710962+19310962+19315460(Top 54%)10578(Top 66%)10578(Top 642%)
20K12.43 mi3.11 mi16172+18810869+9310869+9315706(Top 55%)10623(Top 66%)10623(Top 645%)
Half13.11 mi0.68 mi16193-2110873-410873-416648(Top 59%)11043(Top 69%)11043(Top 670%)
25K15.53 mi2.42 mi16050+14310814+5910814+5915439(Top 54%)10422(Top 65%)10422(Top 632%)
30K18.64 mi3.11 mi16145-9510788+2610788+2616674(Top 59%)10786(Top 67%)10786(Top 654%)
20M20.00 mi1.36 mi16229-8410785+310785+317641(Top 62%)11097(Top 69%)11097(Top 673%)
21M21.00 mi1.00 mi16315-8610790-510790-518275(Top 64%)11291(Top 70%)11291(Top 685%)
35K21.75 mi0.75 mi16293+2210764+2610764+2616735(Top 59%)10509(Top 65%)10509(Top 638%)
23M23.00 mi1.25 mi16232+6110708+5610708+5616097(Top 57%)10115(Top 63%)10115(Top 614%)
24M24.00 mi1.00 mi16468-23610779-7110779-7120105(Top 71%)11912(Top 74%)11912(Top 723%)
40K24.85 mi0.85 mi16691-22310839-6010839-6020620(Top 73%)12093(Top 75%)12093(Top 734%)
25.2M25.20 mi0.35 mi16807-11610865-2610865-2621375(Top 75%)12464(Top 77%)12464(Top 756%)
Finish26.22 mi1.02 mi16932-12510909-4410909-4418748(Top 66%)11238(Top 70%)11238(Top 682%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

15460

Males

10578

M55-59

10578

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

15338

Males

10549

M55-59

10549

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

15460

Males

10578

M55-59

10578

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15706

Males

10623

M55-59

10623

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16648

Males

11043

M55-59

11043

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

15439

Males

10422

M55-59

10422

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

16674

Males

10786

M55-59

10786

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17641

Males

11097

M55-59

11097

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18275

Males

11291

M55-59

11291

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16735

Males

10509

M55-59

10509

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

16097

Males

10115

M55-59

10115

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

20105

Males

11912

M55-59

11912

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20620

Males

12093

M55-59

12093

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21375

Males

12464

M55-59

12464

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18748

Males

11238

M55-59

11238

Passing Analysis

Category:
Athletes Passed
3185
Passed By
1862
Net Change
+1323
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18255
5K → 10K144123+1418#18255#16837
10K → 15K51134+477#16837#16360
15K → 20K310122+188#16360#16172
20K → Half1738-21#16172#16193
Half → 25K22885+143#16193#16050
25K → 30K195290-95#16050#16145
30K → 20M90174-84#16145#16229
20M → 21M76162-86#16229#16315
21M → 35K7250+22#16315#16293
35K → 23M13978+61#16293#16232
23M → 24M29265-236#16232#16468
24M → 40K35258-223#16468#16691
40K → 25.2M8124-116#16691#16807
25.2M → Finish34159-125#16807#16932
TOTALS31851862+1323
📊

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