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BOSTON MARATHON 2025

John Croasdale

Bib: 26142•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:44
Rank: #26844
Start → 5K
32:44 | 10:32/mi
10K· 6.21 mi
1:06:56
Rank: #26979 (-135)
5K → 10K
34:12 | 11:00/mi
15K· 9.32 mi
1:41:26
Rank: #26917 (+62)
10K → 15K
34:30 | 11:06/mi
20K· 12.43 mi
2:17:52
Rank: #26917
15K → 20K
36:26 | 11:44/mi
Half· 13.11 mi
2:25:48
Rank: #26929 (-12)
20K → Half
7:56 | 11:38/mi
25K· 15.53 mi
2:56:02
Rank: #26947 (-18)
Half → 25K
30:14 | 12:28/mi
30K· 18.64 mi
3:36:36
Rank: #26928 (+19)
25K → 30K
40:34 | 13:03/mi
20M
3:54:05
Rank: #26905 (+23)
30K → 20M
17:29 | 12:52/mi
21M
4:08:38
Rank: #26916 (-11)
20M → 21M
14:33 | 14:33/mi
35K· 21.75 mi
4:17:03
Rank: #26855 (+61)
21M → 35K
8:25 | 11:15/mi
23M
4:33:59
Rank: #26875 (-20)
35K → 23M
16:56 | 13:31/mi
24M
4:47:15
Rank: #26884 (-9)
23M → 24M
13:16 | 13:16/mi
40K· 24.85 mi
4:58:54
Rank: #26897 (-13)
24M → 40K
11:39 | 13:38/mi
25.2M
5:04:09
Rank: #26907 (-10)
40K → 25.2M
5:15 | 15:13/mi
Finish· 26.22 mi
5:17:17
Rank: #26949 (-42)
25.2M → Finish
13:08 | 12:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:25:48
Pace11:07 /mi
2nd Half
Distance13.11 mi
Time2:51:29
Pace13:05 /mi
📊Positive Split: 17.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3732:4410:3232:44
10:32
-
10K
6.21 mi12:23:491:06:5610:4634:12
11:00
+0:28
15K
9.32 mi12:58:191:41:2610:5334:30
11:06
+0:06
20K
12.43 mi13:34:452:17:5211:0636:26
11:44
+0:38
Half
13.11 mi13:42:412:25:4811:077:56
11:38
-0:06
25K
15.53 mi14:12:552:56:0211:2030:14
12:28
+0:50
30K
18.64 mi14:53:293:36:3611:3740:34
13:03
+0:35
20M
20.00 mi15:10:583:54:0511:4217:29
12:52
-0:11
21M
21.00 mi15:25:314:08:3811:5014:33
14:33
+1:41
35K
21.75 mi15:33:564:17:0311:498:25
11:15
-3:18
23M
23.00 mi15:50:524:33:5911:5516:56
13:31
+2:16
24M
24.00 mi16:04:084:47:1511:5813:16
13:16
-0:15
40K
24.85 mi16:15:474:58:5412:0211:39
13:38
+0:22
25.2M
25.20 mi16:21:025:04:0912:045:15
15:13
+1:35
Finish
26.22 mi16:34:105:17:1712:0713:08
12:53
-2:20

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

10:32 /mi

Average Pace

12:07 /mi

Slowest Pace

15:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:13

49% of race

Time at Steady Pace

2:11:37

41% of race

Time at Slower Pace

31:27

10% of race

Average Pace: 12:06 /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 mi11:49:3732:4410:3232:44
10:32
#26844
10K
6.21 mi12:23:491:06:5610:4634:12
11:00
#26979
15K
9.32 mi12:58:191:41:2610:5334:30
11:06
#26917
20K
12.43 mi13:34:452:17:5211:0636:26
11:44
#26917
Half
13.11 mi13:42:412:25:4811:077:56
11:38
#26929
25K
15.53 mi14:12:552:56:0211:2030:14
12:28
#26947
30K
18.64 mi14:53:293:36:3611:3740:34
13:03
#26928
20M
20.00 mi15:10:583:54:0511:4217:29
12:52
#26905
21M
21.00 mi15:25:314:08:3811:5014:33
14:33
#26916
35K
21.75 mi15:33:564:17:0311:498:25
11:15
#26855
23M
23.00 mi15:50:524:33:5911:5516:56
13:31
#26875
24M
24.00 mi16:04:084:47:1511:5813:16
13:16
#26884
40K
24.85 mi16:15:474:58:5412:0211:39
13:38
#26897
25.2M
25.20 mi16:21:025:04:0912:045:15
15:13
#26907
Finish
26.22 mi16:34:105:17:1712:0713:08
12:53
#26949
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi26844155391553926808(Top 94%)15484(Top 96%)15484(Top 274%)
10K6.21 mi3.10 mi26979-13515582-4315582-4327070(Top 95%)15593(Top 97%)15593(Top 276%)
15K9.32 mi3.11 mi26917+6215542+4015542+4026808(Top 94%)15484(Top 96%)15484(Top 274%)
20K12.43 mi3.11 mi2691715531+1115531+1126876(Top 95%)15491(Top 96%)15491(Top 275%)
Half13.11 mi0.68 mi26929-1215530+115530+127173(Top 96%)15590(Top 97%)15590(Top 276%)
25K15.53 mi2.42 mi26947-1815527+315527+326899(Top 95%)15459(Top 96%)15459(Top 274%)
30K18.64 mi3.11 mi26928+1915509+1815509+1826742(Top 94%)15320(Top 95%)15320(Top 272%)
20M20.00 mi1.36 mi26905+2315487+2215487+2226320(Top 93%)15077(Top 94%)15077(Top 267%)
21M21.00 mi1.00 mi26916-1115488-115488-126756(Top 94%)15241(Top 95%)15241(Top 270%)
35K21.75 mi0.75 mi26855+6115454+3415454+3424698(Top 87%)14215(Top 88%)14215(Top 252%)
23M23.00 mi1.25 mi26875-2015458-415458-426902(Top 95%)15282(Top 95%)15282(Top 271%)
24M24.00 mi1.00 mi26884-915447+1115447+1127121(Top 95%)15348(Top 95%)15348(Top 272%)
40K24.85 mi0.85 mi26897-1315443+415443+426875(Top 95%)15222(Top 95%)15222(Top 270%)
25.2M25.20 mi0.35 mi26907-1015450-715450-727278(Top 96%)15422(Top 96%)15422(Top 273%)
Finish26.22 mi1.02 mi26949-4215461-1115461-1127554(Top 97%)15592(Top 97%)15592(Top 276%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

26808

Males

15484

M18-39

15484

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

27070

Males

15593

M18-39

15593

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

26808

Males

15484

M18-39

15484

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

26876

Males

15491

M18-39

15491

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

27173

Males

15590

M18-39

15590

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

26899

Males

15459

M18-39

15459

25K→30K

15.5 - 18.6 mi

Top 94%
×9stories
+181ft-148ft

Overall

26742

Males

15320

M18-39

15320

30K→20M

18.6 - 20.0 mi

Top 93%
×5stories
+64ft-50ft

Overall

26320

Males

15077

M18-39

15077

20M→21M

20.0 - 21.0 mi

Top 94%
×8stories
+106ft-24ft

Overall

26756

Males

15241

M18-39

15241

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

24698

Males

14215

M18-39

14215

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

26902

Males

15282

M18-39

15282

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

27121

Males

15348

M18-39

15348

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

26875

Males

15222

M18-39

15222

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27278

Males

15422

M18-39

15422

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2stories
+22ft-21ft

Overall

27554

Males

15592

M18-39

15592

Passing Analysis

Category:
Athletes Passed
748
Passed By
853
Net Change
-105
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26844
5K → 10K110245-135#26844#26979
10K → 15K14987+62#26979#26917
15K → 20K1071070#26917#26917
20K → Half1729-12#26917#26929
Half → 25K5775-18#26929#26947
25K → 30K9677+19#26947#26928
30K → 20M4522+23#26928#26905
20M → 21M2132-11#26905#26916
21M → 35K632+61#26916#26855
35K → 23M2343-20#26855#26875
23M → 24M3039-9#26875#26884
24M → 40K1932-13#26884#26897
40K → 25.2M313-10#26897#26907
25.2M → Finish850-42#26907#26949
TOTALS748853-105
📊

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