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BOSTON MARATHON 2025

David Nicholls

Bib: 2186•M

MO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 27%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
17:57
Rank: #568
Start → 5K
17:57 | 5:47/mi
10K· 6.21 mi
36:48
Rank: #870 (-302)
5K → 10K
18:51 | 6:04/mi
15K· 9.32 mi
57:06
Rank: #1516 (-646)
10K → 15K
20:18 | 6:32/mi
20K· 12.43 mi
1:18:25
Rank: #2309 (-793)
15K → 20K
21:19 | 6:52/mi
Half· 13.11 mi
1:23:03
Rank: #2469 (-160)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:40:13
Rank: #3051 (-582)
Half → 25K
17:10 | 7:05/mi
30K· 18.64 mi
2:03:10
Rank: #3694 (-643)
25K → 30K
22:57 | 7:23/mi
20M
2:13:26
Rank: #3919 (-225)
30K → 20M
10:16 | 7:33/mi
21M
2:21:28
Rank: #4112 (-193)
20M → 21M
8:02 | 8:02/mi
35K· 21.75 mi
2:26:37
Rank: #4117 (-5)
21M → 35K
5:09 | 6:53/mi
23M
2:35:56
Rank: #4230 (-113)
35K → 23M
9:19 | 7:26/mi
24M
2:43:22
Rank: #4366 (-136)
23M → 24M
7:26 | 7:26/mi
40K· 24.85 mi
2:49:58
Rank: #4529 (-163)
24M → 40K
6:36 | 7:43/mi
25.2M
2:52:46
Rank: #4571 (-42)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:00:00
Rank: #4687 (-116)
25.2M → Finish
7:14 | 7:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:03
Pace6:20 /mi
2nd Half
Distance13.11 mi
Time1:36:57
Pace7:24 /mi
📊Positive Split: 16.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4217:575:4717:57
5:47
-
10K
6.21 mi10:37:3336:485:5518:51
6:04
+0:17
15K
9.32 mi10:57:5157:066:0820:18
6:32
+0:28
20K
12.43 mi11:19:101:18:256:1921:19
6:52
+0:20
Half
13.11 mi11:23:481:23:036:204:38
6:47
-0:05
25K
15.53 mi11:40:581:40:136:2717:10
7:05
+0:18
30K
18.64 mi12:03:552:03:106:3622:57
7:23
+0:18
20M
20.00 mi12:14:112:13:266:4010:16
7:33
+0:10
21M
21.00 mi12:22:132:21:286:448:02
8:02
+0:29
35K
21.75 mi12:27:222:26:376:445:09
6:53
-1:09
23M
23.00 mi12:36:412:35:566:479:19
7:26
+0:33
24M
24.00 mi12:44:072:43:226:487:26
7:26
0:00
40K
24.85 mi12:50:432:49:586:506:36
7:43
+0:17
25.2M
25.20 mi12:53:312:52:466:512:48
8:07
+0:24
Finish
26.22 mi13:00:453:00:006:527:14
7:06
-1:01

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

5:47 /mi

Average Pace

6:52 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

57:06

32% of race

Time at Steady Pace

1:18:27

44% of race

Time at Slower Pace

44:27

25% of race

Average Pace: 6:52 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:4217:575:4717:57
5:47
#568
10K
6.21 mi10:37:3336:485:5518:51
6:04
#870
15K
9.32 mi10:57:5157:066:0820:18
6:32
#1516
20K
12.43 mi11:19:101:18:256:1921:19
6:52
#2309
Half
13.11 mi11:23:481:23:036:204:38
6:47
#2469
25K
15.53 mi11:40:581:40:136:2717:10
7:05
#3051
30K
18.64 mi12:03:552:03:106:3622:57
7:23
#3694
20M
20.00 mi12:14:112:13:266:4010:16
7:33
#3919
21M
21.00 mi12:22:132:21:286:448:02
8:02
#4112
35K
21.75 mi12:27:222:26:376:445:09
6:53
#4117
23M
23.00 mi12:36:412:35:566:479:19
7:26
#4230
24M
24.00 mi12:44:072:43:226:487:26
7:26
#4366
40K
24.85 mi12:50:432:49:586:506:36
7:43
#4529
25.2M
25.20 mi12:53:312:52:466:512:48
8:07
#4571
Finish
26.22 mi13:00:453:00:006:527:14
7:06
#4687
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5685285283770(Top 13%)3556(Top 22%)3556(Top 63%)
10K6.21 mi3.10 mi870-302816-288816-2881355(Top 5%)1285(Top 8%)1285(Top 23%)
15K9.32 mi3.11 mi1516-6461440-6241440-6243770(Top 13%)3556(Top 22%)3556(Top 63%)
20K12.43 mi3.11 mi2309-7932205-7652205-7655855(Top 21%)5315(Top 33%)5315(Top 94%)
Half13.11 mi0.68 mi2469-1602356-1512356-1515979(Top 21%)5400(Top 34%)5400(Top 96%)
25K15.53 mi2.42 mi3051-5822908-5522908-5526829(Top 24%)5994(Top 37%)5994(Top 106%)
30K18.64 mi3.11 mi3694-6433487-5793487-5796959(Top 25%)5945(Top 37%)5945(Top 105%)
20M20.00 mi1.36 mi3919-2253680-1933680-1937355(Top 26%)6037(Top 37%)6037(Top 107%)
21M21.00 mi1.00 mi4112-1933844-1643844-1647485(Top 26%)5950(Top 37%)5950(Top 105%)
35K21.75 mi0.75 mi4117-53838+63838+64578(Top 16%)4056(Top 25%)4056(Top 72%)
23M23.00 mi1.25 mi4230-1133928-903928-906255(Top 22%)5112(Top 32%)5112(Top 91%)
24M24.00 mi1.00 mi4366-1364033-1054033-1057201(Top 25%)5634(Top 35%)5634(Top 100%)
40K24.85 mi0.85 mi4529-1634163-1304163-1308157(Top 29%)6056(Top 38%)6056(Top 107%)
25.2M25.20 mi0.35 mi4571-424196-334196-336481(Top 23%)5010(Top 31%)5010(Top 89%)
Finish26.22 mi1.02 mi4687-1164289-934289-936330(Top 22%)4930(Top 31%)4930(Top 87%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3770

Males

3556

M18-39

3556

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1355

Males

1285

M18-39

1285

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3770

Males

3556

M18-39

3556

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5855

Males

5315

M18-39

5315

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5979

Males

5400

M18-39

5400

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6829

Males

5994

M18-39

5994

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

6959

Males

5945

M18-39

5945

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7355

Males

6037

M18-39

6037

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7485

Males

5950

M18-39

5950

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4578

Males

4056

M18-39

4056

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6255

Males

5112

M18-39

5112

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7201

Males

5634

M18-39

5634

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8157

Males

6056

M18-39

6056

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6481

Males

5010

M18-39

5010

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

6330

Males

4930

M18-39

4930

Passing Analysis

Category:
Athletes Passed
228
Passed By
4347
Net Change
-4119
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#568
5K → 10K0302-302#568#870
10K → 15K1647-646#870#1516
15K → 20K7800-793#1516#2309
20K → Half0160-160#2309#2469
Half → 25K8590-582#2469#3051
25K → 30K17660-643#3051#3694
30K → 20M19244-225#3694#3919
20M → 21M27220-193#3919#4112
21M → 35K3742-5#4112#4117
35K → 23M39152-113#4117#4230
23M → 24M25161-136#4230#4366
24M → 40K21184-163#4366#4529
40K → 25.2M1355-42#4529#4571
25.2M → Finish14130-116#4571#4687
TOTALS2284347-4119
📊

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