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BOSTON MARATHON 2025

Tom Steendam

Bib: 29670•M

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
27:58
Rank: #22399
Start → 5K
27:58 | 9:00/mi
10K· 6.21 mi
55:08
Rank: #21821 (+578)
5K → 10K
27:10 | 8:45/mi
15K· 9.32 mi
1:22:06
Rank: #21312 (+509)
10K → 15K
26:58 | 8:41/mi
20K· 12.43 mi
1:49:14
Rank: #20861 (+451)
15K → 20K
27:08 | 8:44/mi
Half· 13.11 mi
1:55:03
Rank: #20801 (+60)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:16:42
Rank: #20626 (+175)
Half → 25K
21:39 | 8:56/mi
30K· 18.64 mi
2:46:05
Rank: #20410 (+216)
25K → 30K
29:23 | 9:27/mi
20M
2:58:35
Rank: #20209 (+201)
30K → 20M
12:30 | 9:12/mi
21M
3:08:10
Rank: #19993 (+216)
20M → 21M
9:35 | 9:35/mi
35K· 21.75 mi
3:14:46
Rank: #19904 (+89)
21M → 35K
6:36 | 8:49/mi
23M
3:26:07
Rank: #19706 (+198)
35K → 23M
11:21 | 9:04/mi
24M
3:34:56
Rank: #19576 (+130)
23M → 24M
8:49 | 8:49/mi
40K· 24.85 mi
3:42:34
Rank: #19442 (+134)
24M → 40K
7:38 | 8:56/mi
25.2M
3:45:49
Rank: #19344 (+98)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:54:16
Rank: #19191 (+153)
25.2M → Finish
8:27 | 8:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:03
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time1:59:13
Pace9:06 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0827:589:0027:58
9:00
-
10K
6.21 mi12:14:1855:088:5227:10
8:45
-0:15
15K
9.32 mi12:41:161:22:068:4926:58
8:41
-0:04
20K
12.43 mi13:08:241:49:148:4727:08
8:44
+0:03
Half
13.11 mi13:14:131:55:038:475:49
8:32
-0:12
25K
15.53 mi13:35:522:16:428:4821:39
8:56
+0:24
30K
18.64 mi14:05:152:46:058:5529:23
9:27
+0:31
20M
20.00 mi14:17:452:58:358:5612:30
9:12
-0:15
21M
21.00 mi14:27:203:08:108:589:35
9:35
+0:23
35K
21.75 mi14:33:563:14:468:576:36
8:49
-0:46
23M
23.00 mi14:45:173:26:078:5811:21
9:04
+0:15
24M
24.00 mi14:54:063:34:568:578:49
8:49
-0:15
40K
24.85 mi15:01:443:42:348:577:38
8:56
+0:07
25.2M
25.20 mi15:04:593:45:498:583:15
9:25
+0:29
Finish
26.22 mi15:13:263:54:168:568:27
8:18
-1:07

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

8:18 /mi

Average Pace

8:56 /mi

Slowest Pace

9:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:33

77% of race

Time at Steady Pace

54:43

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:56 /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 mi11:47:0827:589:0027:58
9:00
#22399
10K
6.21 mi12:14:1855:088:5227:10
8:45
#21821
15K
9.32 mi12:41:161:22:068:4926:58
8:41
#21312
20K
12.43 mi13:08:241:49:148:4727:08
8:44
#20861
Half
13.11 mi13:14:131:55:038:475:49
8:32
#20801
25K
15.53 mi13:35:522:16:428:4821:39
8:56
#20626
30K
18.64 mi14:05:152:46:058:5529:23
9:27
#20410
20M
20.00 mi14:17:452:58:358:5612:30
9:12
#20209
21M
21.00 mi14:27:203:08:108:589:35
9:35
#19993
35K
21.75 mi14:33:563:14:468:576:36
8:49
#19904
23M
23.00 mi14:45:173:26:078:5811:21
9:04
#19706
24M
24.00 mi14:54:063:34:568:578:49
8:49
#19576
40K
24.85 mi15:01:443:42:348:577:38
8:56
#19442
25.2M
25.20 mi15:04:593:45:498:583:15
9:25
#19344
Finish
26.22 mi15:13:263:54:168:568:27
8:18
#19191
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22399134801348020354(Top 72%)12669(Top 79%)12669(Top 225%)
10K6.21 mi3.10 mi21821+57813250+23013250+23021111(Top 74%)12963(Top 80%)12963(Top 230%)
15K9.32 mi3.11 mi21312+50913044+20613044+20620354(Top 72%)12669(Top 79%)12669(Top 225%)
20K12.43 mi3.11 mi20861+45112844+20012844+20019577(Top 69%)12271(Top 76%)12271(Top 217%)
Half13.11 mi0.68 mi20801+6012822+2212822+2219328(Top 68%)12182(Top 76%)12182(Top 216%)
25K15.53 mi2.42 mi20626+17512731+9112731+9119560(Top 69%)12211(Top 76%)12211(Top 216%)
30K18.64 mi3.11 mi20410+21612588+14312588+14319768(Top 70%)12183(Top 76%)12183(Top 216%)
20M20.00 mi1.36 mi20209+20112480+10812480+10817770(Top 63%)11151(Top 69%)11151(Top 198%)
21M21.00 mi1.00 mi19993+21612372+10812372+10816452(Top 58%)10460(Top 65%)10460(Top 185%)
35K21.75 mi0.75 mi19904+8912320+5212320+5217354(Top 61%)10758(Top 67%)10758(Top 191%)
23M23.00 mi1.25 mi19706+19812197+12312197+12316625(Top 59%)10349(Top 64%)10349(Top 183%)
24M24.00 mi1.00 mi19576+13012113+8412113+8416403(Top 58%)10218(Top 63%)10218(Top 181%)
40K24.85 mi0.85 mi19442+13412043+7012043+7015899(Top 56%)9875(Top 61%)9875(Top 175%)
25.2M25.20 mi0.35 mi19344+9811989+5411989+5414144(Top 50%)9029(Top 56%)9029(Top 160%)
Finish26.22 mi1.02 mi19191+15311895+9411895+9414857(Top 52%)9427(Top 59%)9427(Top 167%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

20354

Males

12669

M18-39

12669

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

21111

Males

12963

M18-39

12963

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

20354

Males

12669

M18-39

12669

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

19577

Males

12271

M18-39

12271

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19328

Males

12182

M18-39

12182

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19560

Males

12211

M18-39

12211

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

19768

Males

12183

M18-39

12183

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

17770

Males

11151

M18-39

11151

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16452

Males

10460

M18-39

10460

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17354

Males

10758

M18-39

10758

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16625

Males

10349

M18-39

10349

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

16403

Males

10218

M18-39

10218

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15899

Males

9875

M18-39

9875

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14144

Males

9029

M18-39

9029

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

14857

Males

9427

M18-39

9427

Passing Analysis

Category:
Athletes Passed
3617
Passed By
409
Net Change
+3208
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22399
5K → 10K65577+578#22399#21821
10K → 15K55950+509#21821#21312
15K → 20K47726+451#21312#20861
20K → Half644+60#20861#20801
Half → 25K24772+175#20801#20626
25K → 30K323107+216#20626#20410
30K → 20M21615+201#20410#20209
20M → 21M22610+216#20209#19993
21M → 35K10112+89#19993#19904
35K → 23M20911+198#19904#19706
23M → 24M14313+130#19706#19576
24M → 40K1362+134#19576#19442
40K → 25.2M1013+98#19442#19344
25.2M → Finish1607+153#19344#19191
TOTALS3617409+3208
📊

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