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BOSTON MARATHON 2025

David Stark

Bib: 1309•M

CO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 4%
Division (M18-39)
#0 / 5642
Top 11%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:07
Rank: #1620
Start → 5K
19:07 | 6:09/mi
10K· 6.21 mi
37:52
Rank: #1398 (+222)
5K → 10K
18:45 | 6:02/mi
15K· 9.32 mi
56:49
Rank: #1383 (+15)
10K → 15K
18:57 | 6:06/mi
20K· 12.43 mi
1:15:39
Rank: #1272 (+111)
15K → 20K
18:50 | 6:04/mi
Half· 13.11 mi
1:19:40
Rank: #1233 (+39)
20K → Half
4:01 | 5:53/mi
25K· 15.53 mi
1:34:23
Rank: #1183 (+50)
Half → 25K
14:43 | 6:04/mi
30K· 18.64 mi
1:53:45
Rank: #1129 (+54)
25K → 30K
19:22 | 6:14/mi
20M
2:02:14
Rank: #1078 (+51)
30K → 20M
8:29 | 6:15/mi
21M
2:08:40
Rank: #1016 (+62)
20M → 21M
6:26 | 6:26/mi
35K· 21.75 mi
2:13:05
Rank: #983 (+33)
21M → 35K
4:25 | 5:54/mi
23M
2:20:37
Rank: #911 (+72)
35K → 23M
7:32 | 6:01/mi
24M
2:26:30
Rank: #862 (+49)
23M → 24M
5:53 | 5:53/mi
40K· 24.85 mi
2:31:36
Rank: #821 (+41)
24M → 40K
5:06 | 5:58/mi
25.2M
2:33:50
Rank: #807 (+14)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:39:36
Rank: #770 (+37)
25.2M → Finish
5:46 | 5:40/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:19:40
Pace6:05 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:19:56
Pace6:06 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5119:076:0919:07
6:09
-
10K
6.21 mi10:38:3637:526:0618:45
6:02
-0:07
15K
9.32 mi10:57:3356:496:0618:57
6:06
+0:04
20K
12.43 mi11:16:231:15:396:0518:50
6:04
-0:02
Half
13.11 mi11:20:241:19:406:054:01
5:53
-0:11
25K
15.53 mi11:35:071:34:236:0514:43
6:04
+0:11
30K
18.64 mi11:54:291:53:456:0619:22
6:14
+0:10
20M
20.00 mi12:02:582:02:146:078:29
6:15
+0:01
21M
21.00 mi12:09:242:08:406:086:26
6:26
+0:11
35K
21.75 mi12:13:492:13:056:074:25
5:54
-0:32
23M
23.00 mi12:21:212:20:376:077:32
6:01
+0:07
24M
24.00 mi12:27:142:26:306:065:53
5:53
-0:08
40K
24.85 mi12:32:202:31:366:065:06
5:58
+0:05
25.2M
25.20 mi12:34:342:33:506:062:14
6:29
+0:31
Finish
26.22 mi12:40:202:39:366:055:46
5:40
-0:49

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

5:40 /mi

Average Pace

6:05 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:27

89% of race

Time at Steady Pace

17:09

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:05 /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 mi10:19:5119:076:0919:07
6:09
#1620
10K
6.21 mi10:38:3637:526:0618:45
6:02
#1398
15K
9.32 mi10:57:3356:496:0618:57
6:06
#1383
20K
12.43 mi11:16:231:15:396:0518:50
6:04
#1272
Half
13.11 mi11:20:241:19:406:054:01
5:53
#1233
25K
15.53 mi11:35:071:34:236:0514:43
6:04
#1183
30K
18.64 mi11:54:291:53:456:0619:22
6:14
#1129
20M
20.00 mi12:02:582:02:146:078:29
6:15
#1078
21M
21.00 mi12:09:242:08:406:086:26
6:26
#1016
35K
21.75 mi12:13:492:13:056:074:25
5:54
#983
23M
23.00 mi12:21:212:20:376:077:32
6:01
#911
24M
24.00 mi12:27:142:26:306:065:53
5:53
#862
40K
24.85 mi12:32:202:31:366:065:06
5:58
#821
25.2M
25.20 mi12:34:342:33:506:062:14
6:29
#807
Finish
26.22 mi12:40:202:39:366:055:46
5:40
#770
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1620153815381354(Top 5%)1286(Top 8%)1286(Top 23%)
10K6.21 mi3.10 mi1398+2221329+2091329+2091203(Top 4%)1140(Top 7%)1140(Top 20%)
15K9.32 mi3.11 mi1383+151313+161313+161354(Top 5%)1286(Top 8%)1286(Top 23%)
20K12.43 mi3.11 mi1272+1111203+1101203+1101039(Top 4%)978(Top 6%)978(Top 17%)
Half13.11 mi0.68 mi1233+391166+371166+37808(Top 3%)762(Top 5%)762(Top 14%)
25K15.53 mi2.42 mi1183+501118+481118+48987(Top 3%)931(Top 6%)931(Top 17%)
30K18.64 mi3.11 mi1129+541065+531065+531003(Top 4%)943(Top 6%)943(Top 17%)
20M20.00 mi1.36 mi1078+511015+501015+50823(Top 3%)776(Top 5%)776(Top 14%)
21M21.00 mi1.00 mi1016+62956+59956+59565(Top 2%)533(Top 3%)533(Top 9%)
35K21.75 mi0.75 mi983+33925+31925+31536(Top 2%)500(Top 3%)500(Top 9%)
23M23.00 mi1.25 mi911+72855+70855+70371(Top 1%)349(Top 2%)349(Top 6%)
24M24.00 mi1.00 mi862+49808+47808+47382(Top 1%)355(Top 2%)355(Top 6%)
40K24.85 mi0.85 mi821+41769+39769+39349(Top 1%)323(Top 2%)323(Top 6%)
25.2M25.20 mi0.35 mi807+14755+14755+14425(Top 1%)392(Top 2%)392(Top 7%)
Finish26.22 mi1.02 mi770+37718+37718+37311(Top 1%)291(Top 2%)291(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1354

Males

1286

M18-39

1286

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1203

Males

1140

M18-39

1140

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1354

Males

1286

M18-39

1286

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1039

Males

978

M18-39

978

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

808

Males

762

M18-39

762

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

987

Males

931

M18-39

931

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1003

Males

943

M18-39

943

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

823

Males

776

M18-39

776

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

565

Males

533

M18-39

533

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

536

Males

500

M18-39

500

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

371

Males

349

M18-39

349

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

382

Males

355

M18-39

355

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

349

Males

323

M18-39

323

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

425

Males

392

M18-39

392

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

311

Males

291

M18-39

291

Passing Analysis

Category:
Athletes Passed
954
Passed By
104
Net Change
+850
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1620
5K → 10K23311+222#1620#1398
10K → 15K5439+15#1398#1383
15K → 20K1187+111#1383#1272
20K → Half401+39#1272#1233
Half → 25K6212+50#1233#1183
25K → 30K7723+54#1183#1129
30K → 20M554+51#1129#1078
20M → 21M620+62#1078#1016
21M → 35K363+33#1016#983
35K → 23M720+72#983#911
23M → 24M501+49#911#862
24M → 40K410+41#862#821
40K → 25.2M151+14#821#807
25.2M → Finish392+37#807#770
TOTALS954104+850
📊

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