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BOSTON MARATHON 2025

David La

Bib: 4681•M

ON

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 11%
Division (M18-39)
#0 / 5642
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:44
Rank: #2770
Start → 5K
19:44 | 6:21/mi
10K· 6.21 mi
39:47
Rank: #3090 (-320)
5K → 10K
20:03 | 6:27/mi
15K· 9.32 mi
59:18
Rank: #2753 (+337)
10K → 15K
19:31 | 6:17/mi
20K· 12.43 mi
1:19:03
Rank: #2613 (+140)
15K → 20K
19:45 | 6:21/mi
Half· 13.11 mi
1:23:15
Rank: #2566 (+47)
20K → Half
4:12 | 6:09/mi
25K· 15.53 mi
1:38:20
Rank: #2345 (+221)
Half → 25K
15:05 | 6:13/mi
30K· 18.64 mi
1:58:07
Rank: #2121 (+224)
25K → 30K
19:47 | 6:22/mi
20M
2:06:59
Rank: #2065 (+56)
30K → 20M
8:52 | 6:31/mi
21M
2:13:49
Rank: #2028 (+37)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:18:21
Rank: #1934 (+94)
21M → 35K
4:32 | 6:04/mi
23M
2:26:33
Rank: #1880 (+54)
35K → 23M
8:12 | 6:33/mi
24M
2:33:07
Rank: #1880
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:38:51
Rank: #1873 (+7)
24M → 40K
5:44 | 6:42/mi
25.2M
2:41:25
Rank: #1886 (-13)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:48:07
Rank: #1909 (-23)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:15
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:24:52
Pace6:28 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3219:446:2119:44
6:21
-
10K
6.21 mi10:43:3539:476:2420:03
6:27
+0:06
15K
9.32 mi11:03:0659:186:2219:31
6:17
-0:10
20K
12.43 mi11:22:511:19:036:2219:45
6:21
+0:04
Half
13.11 mi11:27:031:23:156:214:12
6:09
-0:12
25K
15.53 mi11:42:081:38:206:2015:05
6:13
+0:04
30K
18.64 mi12:01:551:58:076:2019:47
6:22
+0:09
20M
20.00 mi12:10:472:06:596:218:52
6:31
+0:09
21M
21.00 mi12:17:372:13:496:226:50
6:50
+0:19
35K
21.75 mi12:22:092:18:216:224:32
6:04
-0:46
23M
23.00 mi12:30:212:26:336:228:12
6:33
+0:29
24M
24.00 mi12:36:552:33:076:236:34
6:34
+0:01
40K
24.85 mi12:42:392:38:516:235:44
6:42
+0:08
25.2M
25.20 mi12:45:132:41:256:242:34
7:27
+0:45
Finish
26.22 mi12:51:552:48:076:256:42
6:34
-0:53

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

6:04 /mi

Average Pace

6:25 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:20

26% of race

Time at Steady Pace

1:49:39

65% of race

Time at Slower Pace

15:08

9% of race

Average Pace: 6:25 /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 mi10:23:3219:446:2119:44
6:21
#2770
10K
6.21 mi10:43:3539:476:2420:03
6:27
#3090
15K
9.32 mi11:03:0659:186:2219:31
6:17
#2753
20K
12.43 mi11:22:511:19:036:2219:45
6:21
#2613
Half
13.11 mi11:27:031:23:156:214:12
6:09
#2566
25K
15.53 mi11:42:081:38:206:2015:05
6:13
#2345
30K
18.64 mi12:01:551:58:076:2019:47
6:22
#2121
20M
20.00 mi12:10:472:06:596:218:52
6:31
#2065
21M
21.00 mi12:17:372:13:496:226:50
6:50
#2028
35K
21.75 mi12:22:092:18:216:224:32
6:04
#1934
23M
23.00 mi12:30:212:26:336:228:12
6:33
#1880
24M
24.00 mi12:36:552:33:076:236:34
6:34
#1880
40K
24.85 mi12:42:392:38:516:235:44
6:42
#1873
25.2M
25.20 mi12:45:132:41:256:242:34
7:27
#1886
Finish
26.22 mi12:51:552:48:076:256:42
6:34
#1909
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2770264026402266(Top 8%)2161(Top 13%)2161(Top 38%)
10K6.21 mi3.10 mi3090-3202939-2992939-2993394(Top 12%)3223(Top 20%)3223(Top 57%)
15K9.32 mi3.11 mi2753+3372625+3142625+3142266(Top 8%)2161(Top 13%)2161(Top 38%)
20K12.43 mi3.11 mi2613+1402493+1322493+1322307(Top 8%)2200(Top 14%)2200(Top 39%)
Half13.11 mi0.68 mi2566+472452+412452+411801(Top 6%)1717(Top 11%)1717(Top 30%)
25K15.53 mi2.42 mi2345+2212237+2152237+2151553(Top 5%)1475(Top 9%)1475(Top 26%)
30K18.64 mi3.11 mi2121+2242023+2142023+2141438(Top 5%)1359(Top 8%)1359(Top 24%)
20M20.00 mi1.36 mi2065+561967+561967+561736(Top 6%)1642(Top 10%)1642(Top 29%)
21M21.00 mi1.00 mi2028+371930+371930+371655(Top 6%)1564(Top 10%)1564(Top 28%)
35K21.75 mi0.75 mi1934+941838+921838+92878(Top 3%)823(Top 5%)823(Top 15%)
23M23.00 mi1.25 mi1880+541784+541784+541647(Top 6%)1540(Top 10%)1540(Top 27%)
24M24.00 mi1.00 mi18801782+21782+22353(Top 8%)2178(Top 14%)2178(Top 39%)
40K24.85 mi0.85 mi1873+71775+71775+72404(Top 8%)2201(Top 14%)2201(Top 39%)
25.2M25.20 mi0.35 mi1886-131787-121787-123171(Top 11%)2812(Top 17%)2812(Top 50%)
Finish26.22 mi1.02 mi1909-231808-211808-213206(Top 11%)2838(Top 18%)2838(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2266

Males

2161

M18-39

2161

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3394

Males

3223

M18-39

3223

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2266

Males

2161

M18-39

2161

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2307

Males

2200

M18-39

2200

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1801

Males

1717

M18-39

1717

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1553

Males

1475

M18-39

1475

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1438

Males

1359

M18-39

1359

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1736

Males

1642

M18-39

1642

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1655

Males

1564

M18-39

1564

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

878

Males

823

M18-39

823

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1647

Males

1540

M18-39

1540

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2353

Males

2178

M18-39

2178

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2404

Males

2201

M18-39

2201

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3171

Males

2812

M18-39

2812

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3206

Males

2838

M18-39

2838

Passing Analysis

Category:
Athletes Passed
1427
Passed By
566
Net Change
+861
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2770
5K → 10K42362-320#2770#3090
10K → 15K3425+337#3090#2753
15K → 20K15616+140#2753#2613
20K → Half470+47#2613#2566
Half → 25K2232+221#2566#2345
25K → 30K2295+224#2345#2121
30K → 20M6913+56#2121#2065
20M → 21M5013+37#2065#2028
21M → 35K951+94#2028#1934
35K → 23M7420+54#1934#1880
23M → 24M36360#1880#1880
24M → 40K3528+7#1880#1873
40K → 25.2M619-13#1873#1886
25.2M → Finish2346-23#1886#1909
TOTALS1427566+861
📊

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