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BOSTON MARATHON 2025

Willis Chen

Bib: 2623•M

DC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 25%
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
20:14
Rank: #3934
Start → 5K
6:31/mi
20:14 split
10K· 6.21 mi
40:32
Rank: #3946 (-12)
5K → 10K
6:32/mi
20:18 split
15K· 9.32 mi
1:00:52
Rank: #3890 (+56)
10K → 15K
6:33/mi
20:20 split
20K· 12.43 mi
1:21:38
Rank: #3934 (-44)
15K → 20K
6:41/mi
20:46 split
Half· 13.11 mi
1:26:06
Rank: #3937 (-3)
20K → Half
6:33/mi
4:28 split
25K· 15.53 mi
1:42:31
Rank: #3990 (-53)
Half → 25K
6:46/mi
16:25 split
30K· 18.64 mi
2:04:32
Rank: #4157 (-167)
25K → 30K
7:05/mi
22:01 split
20M
2:14:23
Rank: #4256 (-99)
30K → 20M
7:15/mi
9:51 split
21M
2:22:08
Rank: #4344 (-88)
20M → 21M
7:45/mi
7:45 split
35K· 21.75 mi
2:27:13
Rank: #4318 (+26)
21M → 35K
6:48/mi
5:05 split
23M
2:36:14
Rank: #4330 (-12)
35K → 23M
7:12/mi
9:01 split
24M
2:43:07
Rank: #4275 (+55)
23M → 24M
6:53/mi
6:53 split
40K· 24.85 mi
2:49:14
Rank: #4301 (-26)
24M → 40K
7:09/mi
6:07 split
25.2M
2:51:55
Rank: #4295 (+6)
40K → 25.2M
7:47/mi
2:41 split
Finish· 26.22 mi
2:59:04
Rank: #4375 (-80)
25.2M → Finish
7:01/mi
7:09 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:06
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:32:58
Pace7:06 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0120:146:3120:14
6:31
-
10K
6.21 mi10:42:1940:326:3120:18
6:32
+0:01
15K
9.32 mi11:02:391:00:526:3220:20
6:33
+0:01
20K
12.43 mi11:23:251:21:386:3420:46
6:41
+0:08
Half
13.11 mi11:27:531:26:066:344:28
6:33
-0:08
25K
15.53 mi11:44:181:42:316:3616:25
6:46
+0:13
30K
18.64 mi12:06:192:04:326:4122:01
7:05
+0:19
20M
20.00 mi12:16:102:14:236:439:51
7:15
+0:10
21M
21.00 mi12:23:552:22:086:467:45
7:45
+0:30
35K
21.75 mi12:29:002:27:136:465:05
6:48
-0:57
23M
23.00 mi12:38:012:36:146:489:01
7:12
+0:24
24M
24.00 mi12:44:542:43:076:486:53
6:53
-0:19
40K
24.85 mi12:51:012:49:146:496:07
7:09
+0:16
25.2M
25.20 mi12:53:422:51:556:492:41
7:47
+0:38
Finish
26.22 mi13:00:512:59:046:507:09
7:01
-0:46

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

6:31 /mi

Average Pace

6:50 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:46

84% of race

Time at Steady Pace

18:52

11% of race

Time at Slower Pace

10:26

6% of race

Average Pace: 6:50 /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 mi10:22:0120:146:3120:14
6:31
#3934
10K
6.21 mi10:42:1940:326:3120:18
6:32
#3946
15K
9.32 mi11:02:391:00:526:3220:20
6:33
#3890
20K
12.43 mi11:23:251:21:386:3420:46
6:41
#3934
Half
13.11 mi11:27:531:26:066:344:28
6:33
#3937
25K
15.53 mi11:44:181:42:316:3616:25
6:46
#3990
30K
18.64 mi12:06:192:04:326:4122:01
7:05
#4157
20M
20.00 mi12:16:102:14:236:439:51
7:15
#4256
21M
21.00 mi12:23:552:22:086:467:45
7:45
#4344
35K
21.75 mi12:29:002:27:136:465:05
6:48
#4318
23M
23.00 mi12:38:012:36:146:489:01
7:12
#4330
24M
24.00 mi12:44:542:43:076:486:53
6:53
#4275
40K
24.85 mi12:51:012:49:146:496:07
7:09
#4301
25.2M
25.20 mi12:53:422:51:556:492:41
7:47
#4295
Finish
26.22 mi13:00:512:59:046:507:09
7:01
#4375
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3934372437243845(Top 14%)3629(Top 23%)3629(Top 64%)
10K6.21 mi3.10 mi3946-123730-63730-63985(Top 14%)3752(Top 23%)3752(Top 67%)
15K9.32 mi3.11 mi3890+563670+603670+603845(Top 14%)3629(Top 23%)3629(Top 64%)
20K12.43 mi3.11 mi3934-443705-353705-354304(Top 15%)4027(Top 25%)4027(Top 71%)
Half13.11 mi0.68 mi3937-33707-23707-24044(Top 14%)3808(Top 24%)3808(Top 67%)
25K15.53 mi2.42 mi3990-533755-483755-484651(Top 16%)4288(Top 27%)4288(Top 76%)
30K18.64 mi3.11 mi4157-1673895-1403895-1405242(Top 18%)4733(Top 29%)4733(Top 84%)
20M20.00 mi1.36 mi4256-993980-853980-855488(Top 19%)4838(Top 30%)4838(Top 86%)
21M21.00 mi1.00 mi4344-884039-594039-595911(Top 21%)5011(Top 31%)5011(Top 89%)
35K21.75 mi0.75 mi4318+264011+284011+284108(Top 14%)3683(Top 23%)3683(Top 65%)
23M23.00 mi1.25 mi4330-124016-54016-54882(Top 17%)4233(Top 26%)4233(Top 75%)
24M24.00 mi1.00 mi4275+553953+633953+633998(Top 14%)3537(Top 22%)3537(Top 63%)
40K24.85 mi0.85 mi4301-263967-143967-144787(Top 17%)4065(Top 25%)4065(Top 72%)
25.2M25.20 mi0.35 mi4295+63959+83959+84778(Top 17%)3976(Top 25%)3976(Top 70%)
Finish26.22 mi1.02 mi4375-804020-614020-615826(Top 21%)4623(Top 29%)4623(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3845

Males

3629

M18-39

3629

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3985

Males

3752

M18-39

3752

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3845

Males

3629

M18-39

3629

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4304

Males

4027

M18-39

4027

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

4044

Males

3808

M18-39

3808

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4651

Males

4288

M18-39

4288

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5242

Males

4733

M18-39

4733

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5488

Males

4838

M18-39

4838

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5911

Males

5011

M18-39

5011

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4108

Males

3683

M18-39

3683

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4882

Males

4233

M18-39

4233

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3998

Males

3537

M18-39

3537

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4787

Males

4065

M18-39

4065

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4778

Males

3976

M18-39

3976

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5826

Males

4623

M18-39

4623

Passing Analysis

Category:
Athletes Passed
876
Passed By
1317
Net Change
-441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3934
5K → 10K145157-12#3934#3946
10K → 15K12468+56#3946#3890
15K → 20K80124-44#3890#3934
20K → Half1417-3#3934#3937
Half → 25K58111-53#3937#3990
25K → 30K88255-167#3990#4157
30K → 20M45144-99#4157#4256
20M → 21M45133-88#4256#4344
21M → 35K5428+26#4344#4318
35K → 23M6476-12#4318#4330
23M → 24M8126+55#4330#4275
24M → 40K3662-26#4275#4301
40K → 25.2M2418+6#4301#4295
25.2M → Finish1898-80#4295#4375
TOTALS8761317-441
📊

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