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BOSTON MARATHON 2025

Jason Nadeau

Bib: 4303•M

CA

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
20:42
Rank: #5141
Start → 5K
20:42 | 6:40/mi
10K· 6.21 mi
41:38
Rank: #5373 (-232)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:03:09
Rank: #5958 (-585)
10K → 15K
21:31 | 6:56/mi
20K· 12.43 mi
1:26:40
Rank: #7326 (-1368)
15K → 20K
23:31 | 7:34/mi
Half· 13.11 mi
1:31:41
Rank: #7453 (-127)
20K → Half
5:01 | 7:21/mi
25K· 15.53 mi
2:02:16
Rank: #14472 (-7019)
Half → 25K
30:35 | 12:37/mi
30K· 18.64 mi
2:31:03
Rank: #15528 (-1056)
25K → 30K
28:47 | 9:16/mi
20M
2:46:26
Rank: #16647 (-1119)
30K → 20M
15:23 | 11:19/mi
21M
2:59:19
Rank: #17610 (-963)
20M → 21M
12:53 | 12:53/mi
35K· 21.75 mi
3:07:24
Rank: #18033 (-423)
21M → 35K
8:05 | 10:48/mi
23M
3:22:49
Rank: #18979 (-946)
35K → 23M
15:25 | 12:19/mi
24M
3:34:09
Rank: #19417 (-438)
23M → 24M
11:20 | 11:20/mi
40K· 24.85 mi
3:44:49
Rank: #19900 (-483)
24M → 40K
10:40 | 12:29/mi
25.2M
3:48:49
Rank: #19954 (-54)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
3:59:54
Rank: #20333 (-379)
25.2M → Finish
11:05 | 10:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:41
Pace7:00 /mi
2nd Half
Distance13.11 mi
Time2:28:13
Pace11:18 /mi
📊Positive Split: 61.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2720:426:4020:42
6:40
-
10K
6.21 mi10:44:2341:386:4220:56
6:44
+0:04
15K
9.32 mi11:05:541:03:096:4721:31
6:56
+0:12
20K
12.43 mi11:29:251:26:406:5823:31
7:34
+0:38
Half
13.11 mi11:34:261:31:417:005:01
7:21
-0:13
25K
15.53 mi12:05:012:02:167:5230:35
12:37
+5:16
30K
18.64 mi12:33:482:31:038:0628:47
9:16
-3:21
20M
20.00 mi12:49:112:46:268:1915:23
11:19
+2:03
21M
21.00 mi13:02:042:59:198:3212:53
12:53
+1:34
35K
21.75 mi13:10:093:07:248:378:05
10:48
-2:05
23M
23.00 mi13:25:343:22:498:4915:25
12:19
+1:31
24M
24.00 mi13:36:543:34:098:5511:20
11:20
-0:59
40K
24.85 mi13:47:343:44:499:0310:40
12:29
+1:09
25.2M
25.20 mi13:51:343:48:499:054:00
11:36
-0:53
Finish
26.22 mi14:02:393:59:549:0911:05
10:53
-0:43

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

6:40 /mi

Average Pace

9:09 /mi

Slowest Pace

12:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:28

50% of race

Time at Steady Pace

49:53

21% of race

Time at Slower Pace

1:09:33

29% of race

Average Pace: 9:09 /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 mi10:23:2720:426:4020:42
6:40
#5141
10K
6.21 mi10:44:2341:386:4220:56
6:44
#5373
15K
9.32 mi11:05:541:03:096:4721:31
6:56
#5958
20K
12.43 mi11:29:251:26:406:5823:31
7:34
#7326
Half
13.11 mi11:34:261:31:417:005:01
7:21
#7453
25K
15.53 mi12:05:012:02:167:5230:35
12:37
#14472
30K
18.64 mi12:33:482:31:038:0628:47
9:16
#15528
20M
20.00 mi12:49:112:46:268:1915:23
11:19
#16647
21M
21.00 mi13:02:042:59:198:3212:53
12:53
#17610
35K
21.75 mi13:10:093:07:248:378:05
10:48
#18033
23M
23.00 mi13:25:343:22:498:4915:25
12:19
#18979
24M
24.00 mi13:36:543:34:098:5511:20
11:20
#19417
40K
24.85 mi13:47:343:44:499:0310:40
12:29
#19900
25.2M
25.20 mi13:51:343:48:499:054:00
11:36
#19954
Finish
26.22 mi14:02:393:59:549:0911:05
10:53
#20333
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5141479747977132(Top 25%)6350(Top 39%)6350(Top 113%)
10K6.21 mi3.10 mi5373-2324981-1844981-1845719(Top 20%)5248(Top 33%)5248(Top 93%)
15K9.32 mi3.11 mi5958-5855463-4825463-4827132(Top 25%)6350(Top 39%)6350(Top 113%)
20K12.43 mi3.11 mi7326-13686511-10486511-104811340(Top 40%)8666(Top 54%)8666(Top 154%)
Half13.11 mi0.68 mi7453-1276596-856596-8510492(Top 37%)8305(Top 52%)8305(Top 147%)
25K15.53 mi2.42 mi14472-701910113-351710113-351727014(Top 95%)15511(Top 96%)15511(Top 275%)
30K18.64 mi3.11 mi15528-105610523-41010523-41018956(Top 67%)11815(Top 73%)11815(Top 209%)
20M20.00 mi1.36 mi16647-111910967-44410967-44424218(Top 85%)14082(Top 87%)14082(Top 250%)
21M21.00 mi1.00 mi17610-96311335-36811335-36824904(Top 88%)14319(Top 89%)14319(Top 254%)
35K21.75 mi0.75 mi18033-42311517-18211517-18223804(Top 84%)13789(Top 86%)13789(Top 244%)
23M23.00 mi1.25 mi18979-94611888-37111888-37125547(Top 90%)14598(Top 91%)14598(Top 259%)
24M24.00 mi1.00 mi19417-43812047-15912047-15924620(Top 87%)14114(Top 88%)14114(Top 250%)
40K24.85 mi0.85 mi19900-48312242-19512242-19525623(Top 90%)14597(Top 91%)14597(Top 259%)
25.2M25.20 mi0.35 mi19954-5412259-1712259-1722272(Top 78%)12922(Top 80%)12922(Top 229%)
Finish26.22 mi1.02 mi20333-37912423-16412423-16425117(Top 88%)14339(Top 89%)14339(Top 254%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7132

Males

6350

M18-39

6350

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5719

Males

5248

M18-39

5248

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7132

Males

6350

M18-39

6350

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

11340

Males

8666

M18-39

8666

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10492

Males

8305

M18-39

8305

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

27014

Males

15511

M18-39

15511

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

18956

Males

11815

M18-39

11815

30K→20M

18.6 - 20.0 mi

Top 85%
×5stories
+64ft-50ft

Overall

24218

Males

14082

M18-39

14082

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

24904

Males

14319

M18-39

14319

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

23804

Males

13789

M18-39

13789

35K→23M

21.8 - 23.0 mi

Top 90%
×5stories
+23ft-63ft

Overall

25547

Males

14598

M18-39

14598

23M→24M

23.0 - 24.0 mi

Top 87%
×6stories
+12ft-82ft

Overall

24620

Males

14114

M18-39

14114

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25623

Males

14597

M18-39

14597

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22272

Males

12922

M18-39

12922

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

25117

Males

14339

M18-39

14339

Passing Analysis

Category:
Athletes Passed
286
Passed By
15476
Net Change
-15192
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5141
5K → 10K96328-232#5141#5373
10K → 15K29614-585#5373#5958
15K → 20K81376-1368#5958#7326
20K → Half6133-127#7326#7453
Half → 25K17018-7019#7453#14472
25K → 30K591115-1056#14472#15528
30K → 20M101129-1119#15528#16647
20M → 21M12975-963#16647#17610
21M → 35K14437-423#17610#18033
35K → 23M10956-946#18033#18979
23M → 24M11449-438#18979#19417
24M → 40K10493-483#19417#19900
40K → 25.2M1367-54#19900#19954
25.2M → Finish7386-379#19954#20333
TOTALS28615476-15192
📊

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