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BOSTON MARATHON 2025

David Snowdon

Bib: 6199•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
20:37
Rank: #4912
Start → 5K
20:37 | 6:38/mi
10K· 6.21 mi
41:32
Rank: #5228 (-316)
5K → 10K
20:55 | 6:44/mi
15K· 9.32 mi
1:02:43
Rank: #5527 (-299)
10K → 15K
21:11 | 6:49/mi
20K· 12.43 mi
1:23:58
Rank: #5536 (-9)
15K → 20K
21:15 | 6:50/mi
Half· 13.11 mi
1:28:33
Rank: #5529 (+7)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:19
Rank: #5532 (-3)
Half → 25K
16:46 | 6:55/mi
30K· 18.64 mi
2:07:16
Rank: #5393 (+139)
25K → 30K
21:57 | 7:04/mi
20M
2:17:12
Rank: #5446 (-53)
30K → 20M
9:56 | 7:19/mi
21M
2:24:52
Rank: #5426 (+20)
20M → 21M
7:40 | 7:40/mi
35K· 21.75 mi
2:30:10
Rank: #5417 (+9)
21M → 35K
5:18 | 7:05/mi
23M
2:39:33
Rank: #5424 (-7)
35K → 23M
9:23 | 7:30/mi
24M
2:46:50
Rank: #5418 (+6)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
2:53:13
Rank: #5402 (+16)
24M → 40K
6:23 | 7:28/mi
25.2M
2:55:59
Rank: #5379 (+23)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:03:16
Rank: #5367 (+12)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:33
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:34:43
Pace7:14 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:3520:376:3820:37
6:38
-
10K
6.21 mi10:48:3041:326:4120:55
6:44
+0:06
15K
9.32 mi11:09:411:02:436:4421:11
6:49
+0:05
20K
12.43 mi11:30:561:23:586:4521:15
6:50
+0:01
Half
13.11 mi11:35:311:28:336:454:35
6:43
-0:07
25K
15.53 mi11:52:171:45:196:4716:46
6:55
+0:12
30K
18.64 mi12:14:142:07:166:5021:57
7:04
+0:09
20M
20.00 mi12:24:102:17:126:529:56
7:19
+0:15
21M
21.00 mi12:31:502:24:526:547:40
7:40
+0:21
35K
21.75 mi12:37:082:30:106:545:18
7:05
-0:35
23M
23.00 mi12:46:312:39:336:569:23
7:30
+0:25
24M
24.00 mi12:53:482:46:506:577:17
7:17
-0:13
40K
24.85 mi13:00:112:53:136:586:23
7:28
+0:11
25.2M
25.20 mi13:02:572:55:596:592:46
8:01
+0:33
Finish
26.22 mi13:10:143:03:167:007:17
7:09
-0:52

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

6:38 /mi

Average Pace

7:00 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:33

48% of race

Time at Steady Pace

51:18

28% of race

Time at Slower Pace

43:25

24% 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 mi10:27:3520:376:3820:37
6:38
#4912
10K
6.21 mi10:48:3041:326:4120:55
6:44
#5228
15K
9.32 mi11:09:411:02:436:4421:11
6:49
#5527
20K
12.43 mi11:30:561:23:586:4521:15
6:50
#5536
Half
13.11 mi11:35:311:28:336:454:35
6:43
#5529
25K
15.53 mi11:52:171:45:196:4716:46
6:55
#5532
30K
18.64 mi12:14:142:07:166:5021:57
7:04
#5393
20M
20.00 mi12:24:102:17:126:529:56
7:19
#5446
21M
21.00 mi12:31:502:24:526:547:40
7:40
#5426
35K
21.75 mi12:37:082:30:106:545:18
7:05
#5417
23M
23.00 mi12:46:312:39:336:569:23
7:30
#5424
24M
24.00 mi12:53:482:46:506:577:17
7:17
#5418
40K
24.85 mi13:00:112:53:136:586:23
7:28
#5402
25.2M
25.20 mi13:02:572:55:596:592:46
8:01
#5379
Finish
26.22 mi13:10:143:03:167:007:17
7:09
#5367
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4912459745976257(Top 22%)5667(Top 35%)5667(Top 252%)
10K6.21 mi3.10 mi5228-3164861-2644861-2645649(Top 20%)5189(Top 32%)5189(Top 231%)
15K9.32 mi3.11 mi5527-2995108-2475108-2476257(Top 22%)5667(Top 35%)5667(Top 252%)
20K12.43 mi3.11 mi5536-95101+75101+75691(Top 20%)5189(Top 32%)5189(Top 231%)
Half13.11 mi0.68 mi5529+75088+135088+135473(Top 19%)5028(Top 31%)5028(Top 224%)
25K15.53 mi2.42 mi5532-35084+45084+45772(Top 20%)5216(Top 32%)5216(Top 232%)
30K18.64 mi3.11 mi5393+1394946+1384946+1385116(Top 18%)4633(Top 29%)4633(Top 206%)
20M20.00 mi1.36 mi5446-534985-394985-395849(Top 21%)5092(Top 32%)5092(Top 227%)
21M21.00 mi1.00 mi5426+204957+284957+285473(Top 19%)4719(Top 29%)4719(Top 210%)
35K21.75 mi0.75 mi5417+94941+164941+165890(Top 21%)4989(Top 31%)4989(Top 222%)
23M23.00 mi1.25 mi5424-74936+54936+56573(Top 23%)5340(Top 33%)5340(Top 238%)
24M24.00 mi1.00 mi5418+64922+144922+146304(Top 22%)5104(Top 32%)5104(Top 227%)
40K24.85 mi0.85 mi5402+164891+314891+316584(Top 23%)5191(Top 32%)5191(Top 231%)
25.2M25.20 mi0.35 mi5379+234864+274864+276037(Top 21%)4763(Top 30%)4763(Top 212%)
Finish26.22 mi1.02 mi5367+124841+234841+236671(Top 23%)5131(Top 32%)5131(Top 228%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

6257

Males

5667

M40-44

5667

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5649

Males

5189

M40-44

5189

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

6257

Males

5667

M40-44

5667

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5691

Males

5189

M40-44

5189

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5473

Males

5028

M40-44

5028

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5772

Males

5216

M40-44

5216

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5116

Males

4633

M40-44

4633

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5849

Males

5092

M40-44

5092

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5473

Males

4719

M40-44

4719

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5890

Males

4989

M40-44

4989

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6573

Males

5340

M40-44

5340

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

6304

Males

5104

M40-44

5104

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6584

Males

5191

M40-44

5191

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

6037

Males

4763

M40-44

4763

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6671

Males

5131

M40-44

5131

Passing Analysis

Category:
Athletes Passed
1093
Passed By
1548
Net Change
-455
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4912
5K → 10K76392-316#4912#5228
10K → 15K44343-299#5228#5527
15K → 20K125134-9#5527#5536
20K → Half2417+7#5536#5529
Half → 25K119122-3#5529#5532
25K → 30K23697+139#5532#5393
30K → 20M59112-53#5393#5446
20M → 21M8262+20#5446#5426
21M → 35K5748+9#5426#5417
35K → 23M8188-7#5417#5424
23M → 24M4943+6#5424#5418
24M → 40K5640+16#5418#5402
40K → 25.2M3310+23#5402#5379
25.2M → Finish5240+12#5379#5367
TOTALS10931548-455
📊

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