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BOSTON MARATHON 2025

James Li

Bib: 7612•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:10
Rank: #6386
Start → 5K
21:10 | 6:49/mi
10K· 6.21 mi
42:21
Rank: #6439 (-53)
5K → 10K
21:11 | 6:49/mi
15K· 9.32 mi
1:03:53
Rank: #6697 (-258)
10K → 15K
21:32 | 6:56/mi
20K· 12.43 mi
1:25:51
Rank: #6879 (-182)
15K → 20K
21:58 | 7:04/mi
Half· 13.11 mi
1:30:39
Rank: #6936 (-57)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:48:47
Rank: #7285 (-349)
Half → 25K
18:08 | 7:29/mi
30K· 18.64 mi
2:15:05
Rank: #8397 (-1112)
25K → 30K
26:18 | 8:28/mi
20M
2:27:47
Rank: #9296 (-899)
30K → 20M
12:42 | 9:21/mi
21M
2:37:58
Rank: #10014 (-718)
20M → 21M
10:11 | 10:11/mi
35K· 21.75 mi
2:45:10
Rank: #10558 (-544)
21M → 35K
7:12 | 9:37/mi
23M
2:59:11
Rank: #11892 (-1334)
35K → 23M
14:01 | 11:12/mi
24M
3:10:01
Rank: #12779 (-887)
23M → 24M
10:50 | 10:50/mi
40K· 24.85 mi
3:19:15
Rank: #13380 (-601)
24M → 40K
9:14 | 10:48/mi
25.2M
3:23:13
Rank: #13617 (-237)
40K → 25.2M
3:58 | 11:30/mi
Finish· 26.22 mi
3:33:51
Rank: #14243 (-626)
25.2M → Finish
10:38 | 10:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:39
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time2:03:12
Pace9:24 /mi
📊Positive Split: 35.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:1621:106:4921:10
6:49
-
10K
6.21 mi10:50:2742:216:4921:11
6:49
0:00
15K
9.32 mi11:11:591:03:536:5121:32
6:56
+0:07
20K
12.43 mi11:33:571:25:516:5421:58
7:04
+0:08
Half
13.11 mi11:38:451:30:396:554:48
7:02
-0:02
25K
15.53 mi11:56:531:48:477:0018:08
7:29
+0:27
30K
18.64 mi12:23:112:15:057:1526:18
8:28
+0:59
20M
20.00 mi12:35:532:27:477:2312:42
9:21
+0:53
21M
21.00 mi12:46:042:37:587:3110:11
10:11
+0:50
35K
21.75 mi12:53:162:45:107:367:12
9:37
-0:34
23M
23.00 mi13:07:172:59:117:4714:01
11:12
+1:35
24M
24.00 mi13:18:073:10:017:5510:50
10:50
-0:22
40K
24.85 mi13:27:213:19:158:019:14
10:48
-0:02
25.2M
25.20 mi13:31:193:23:138:043:58
11:30
+0:42
Finish
26.22 mi13:41:573:33:518:1010:38
10:26
-1:04

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

6:49 /mi

Average Pace

8:10 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:05

63% of race

Time at Steady Pace

30:05

14% of race

Time at Slower Pace

48:41

23% of race

Average Pace: 8:09 /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 mi10:29:1621:106:4921:10
6:49
#6386
10K
6.21 mi10:50:2742:216:4921:11
6:49
#6439
15K
9.32 mi11:11:591:03:536:5121:32
6:56
#6697
20K
12.43 mi11:33:571:25:516:5421:58
7:04
#6879
Half
13.11 mi11:38:451:30:396:554:48
7:02
#6936
25K
15.53 mi11:56:531:48:477:0018:08
7:29
#7285
30K
18.64 mi12:23:112:15:057:1526:18
8:28
#8397
20M
20.00 mi12:35:532:27:477:2312:42
9:21
#9296
21M
21.00 mi12:46:042:37:587:3110:11
10:11
#10014
35K
21.75 mi12:53:162:45:107:367:12
9:37
#10558
23M
23.00 mi13:07:172:59:117:4714:01
11:12
#11892
24M
24.00 mi13:18:073:10:017:5510:50
10:50
#12779
40K
24.85 mi13:27:213:19:158:019:14
10:48
#13380
25.2M
25.20 mi13:31:193:23:138:043:58
11:30
#13617
Finish
26.22 mi13:41:573:33:518:1010:38
10:26
#14243
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6386582058207145(Top 25%)6351(Top 39%)6351(Top 283%)
10K6.21 mi3.10 mi6439-535868-485868-486558(Top 23%)5924(Top 37%)5924(Top 264%)
15K9.32 mi3.11 mi6697-2586044-1766044-1767145(Top 25%)6351(Top 39%)6351(Top 283%)
20K12.43 mi3.11 mi6879-1826189-1456189-1457313(Top 26%)6429(Top 40%)6429(Top 286%)
Half13.11 mi0.68 mi6936-576225-366225-367758(Top 27%)6721(Top 42%)6721(Top 299%)
25K15.53 mi2.42 mi7285-3496456-2316456-2319759(Top 34%)7725(Top 48%)7725(Top 344%)
30K18.64 mi3.11 mi8397-11127119-6637119-66314532(Top 51%)9843(Top 61%)9843(Top 438%)
20M20.00 mi1.36 mi9296-8997598-4797598-47918476(Top 65%)11430(Top 71%)11430(Top 509%)
21M21.00 mi1.00 mi10014-7187949-3517949-35118944(Top 67%)11578(Top 72%)11578(Top 515%)
35K21.75 mi0.75 mi10558-5448194-2458194-24520726(Top 73%)12303(Top 76%)12303(Top 548%)
23M23.00 mi1.25 mi11892-13348780-5868780-58623646(Top 83%)13663(Top 85%)13663(Top 608%)
24M24.00 mi1.00 mi12779-8879172-3929172-39223618(Top 83%)13619(Top 85%)13619(Top 606%)
40K24.85 mi0.85 mi13380-6019407-2359407-23522662(Top 80%)13068(Top 81%)13068(Top 582%)
25.2M25.20 mi0.35 mi13617-2379497-909497-9021997(Top 77%)12773(Top 79%)12773(Top 568%)
Finish26.22 mi1.02 mi14243-6269753-2569753-25624114(Top 85%)13819(Top 86%)13819(Top 615%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7145

Males

6351

M40-44

6351

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6558

Males

5924

M40-44

5924

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7145

Males

6351

M40-44

6351

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7313

Males

6429

M40-44

6429

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7758

Males

6721

M40-44

6721

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9759

Males

7725

M40-44

7725

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14532

Males

9843

M40-44

9843

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18476

Males

11430

M40-44

11430

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

18944

Males

11578

M40-44

11578

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20726

Males

12303

M40-44

12303

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

23646

Males

13663

M40-44

13663

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

23618

Males

13619

M40-44

13619

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22662

Males

13068

M40-44

13068

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21997

Males

12773

M40-44

12773

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24114

Males

13819

M40-44

13819

Passing Analysis

Category:
Athletes Passed
468
Passed By
8322
Net Change
-7857
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6386
5K → 10K163216-53#6386#6439
10K → 15K78336-258#6439#6697
15K → 20K74256-182#6697#6879
20K → Half1269-57#6879#6936
Half → 25K47396-349#6936#7285
25K → 30K331145-1112#7285#8397
30K → 20M13912-899#8397#9296
20M → 21M11727-718#9296#10014
21M → 35K4547-544#10014#10558
35K → 23M51339-1334#10558#11892
23M → 24M5892-887#11892#12779
24M → 40K7608-601#12779#13380
40K → 25.2M7244-237#13380#13617
25.2M → Finish9635-626#13617#14243
TOTALS4688322-7857
📊

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