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BOSTON MARATHON 2025

Ji Li

Bib: 11644•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 37%
Gender (Male)
#0 / 16105
Top 50%
Masters (Masters Men)
#0 / 10463
Top 39%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:43
Rank: #10475
Start → 5K
22:43 | 7:19/mi
10K· 6.21 mi
45:14
Rank: #10171 (+304)
5K → 10K
22:31 | 7:15/mi
15K· 9.32 mi
1:07:42
Rank: #9880 (+291)
10K → 15K
22:28 | 7:14/mi
20K· 12.43 mi
1:30:30
Rank: #9708 (+172)
15K → 20K
22:48 | 7:20/mi
Half· 13.11 mi
1:35:28
Rank: #9715 (-7)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:53:37
Rank: #9687 (+28)
Half → 25K
18:09 | 7:29/mi
30K· 18.64 mi
2:18:03
Rank: #9750 (-63)
25K → 30K
24:26 | 7:52/mi
20M
2:29:06
Rank: #9832 (-82)
30K → 20M
11:03 | 8:08/mi
21M
2:37:58
Rank: #10017 (-185)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:44:09
Rank: #10160 (-143)
21M → 35K
6:11 | 8:16/mi
23M
2:54:34
Rank: #10271 (-111)
35K → 23M
10:25 | 8:19/mi
24M
3:02:34
Rank: #10284 (-13)
23M → 24M
8:00 | 8:00/mi
40K· 24.85 mi
3:09:49
Rank: #10376 (-92)
24M → 40K
7:15 | 8:29/mi
25.2M
3:13:03
Rank: #10436 (-60)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:21:22
Rank: #10547 (-111)
25.2M → Finish
8:19 | 8:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:28
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:45:54
Pace8:05 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1722:437:1922:43
7:19
-
10K
6.21 mi11:11:4845:147:1722:31
7:15
-0:04
15K
9.32 mi11:34:161:07:427:1622:28
7:14
-0:01
20K
12.43 mi11:57:041:30:307:1722:48
7:20
+0:06
Half
13.11 mi12:02:021:35:287:174:58
7:17
-0:03
25K
15.53 mi12:20:111:53:377:1918:09
7:29
+0:12
30K
18.64 mi12:44:372:18:037:2424:26
7:52
+0:23
20M
20.00 mi12:55:402:29:067:2711:03
8:08
+0:16
21M
21.00 mi13:04:322:37:587:318:52
8:52
+0:44
35K
21.75 mi13:10:432:44:097:336:11
8:16
-0:36
23M
23.00 mi13:21:082:54:347:3510:25
8:19
+0:03
24M
24.00 mi13:29:083:02:347:368:00
8:00
-0:19
40K
24.85 mi13:36:233:09:497:387:15
8:29
+0:29
25.2M
25.20 mi13:39:373:13:037:403:14
9:23
+0:54
Finish
26.22 mi13:47:563:21:227:418:19
8:10
-1:13

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

7:14 /mi

Average Pace

7:41 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:37

56% of race

Time at Steady Pace

57:59

29% of race

Time at Slower Pace

29:46

15% of race

Average Pace: 7:41 /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 mi10:49:1722:437:1922:43
7:19
#10475
10K
6.21 mi11:11:4845:147:1722:31
7:15
#10171
15K
9.32 mi11:34:161:07:427:1622:28
7:14
#9880
20K
12.43 mi11:57:041:30:307:1722:48
7:20
#9708
Half
13.11 mi12:02:021:35:287:174:58
7:17
#9715
25K
15.53 mi12:20:111:53:377:1918:09
7:29
#9687
30K
18.64 mi12:44:372:18:037:2424:26
7:52
#9750
20M
20.00 mi12:55:402:29:067:2711:03
8:08
#9832
21M
21.00 mi13:04:322:37:587:318:52
8:52
#10017
35K
21.75 mi13:10:432:44:097:336:11
8:16
#10160
23M
23.00 mi13:21:082:54:347:3510:25
8:19
#10271
24M
24.00 mi13:29:083:02:347:368:00
8:00
#10284
40K
24.85 mi13:36:233:09:497:387:15
8:29
#10376
25.2M
25.20 mi13:39:373:13:037:403:14
9:23
#10436
Finish
26.22 mi13:47:563:21:227:418:19
8:10
#10547
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10475842884289379(Top 33%)7758(Top 48%)7758(Top 325%)
10K6.21 mi3.10 mi10171+3048256+1728256+1729898(Top 35%)8084(Top 50%)8084(Top 339%)
15K9.32 mi3.11 mi9880+2918069+1878069+1879379(Top 33%)7758(Top 48%)7758(Top 325%)
20K12.43 mi3.11 mi9708+1727944+1257944+1259351(Top 33%)7659(Top 48%)7659(Top 321%)
Half13.11 mi0.68 mi9715-77950-67950-69792(Top 34%)7920(Top 49%)7920(Top 332%)
25K15.53 mi2.42 mi9687+287901+497901+499841(Top 35%)7780(Top 48%)7780(Top 326%)
30K18.64 mi3.11 mi9750-637874+277874+2710379(Top 37%)7877(Top 49%)7877(Top 330%)
20M20.00 mi1.36 mi9832-827896-227896-2211306(Top 40%)8185(Top 51%)8185(Top 343%)
21M21.00 mi1.00 mi10017-1857952-567952-5612678(Top 45%)8674(Top 54%)8674(Top 364%)
35K21.75 mi0.75 mi10160-1437991-397991-3913985(Top 49%)9270(Top 58%)9270(Top 389%)
23M23.00 mi1.25 mi10271-1117994-37994-312136(Top 43%)8293(Top 51%)8293(Top 348%)
24M24.00 mi1.00 mi10284-137980+147980+1411216(Top 39%)7769(Top 48%)7769(Top 326%)
40K24.85 mi0.85 mi10376-927989-97989-913264(Top 47%)8639(Top 54%)8639(Top 362%)
25.2M25.20 mi0.35 mi10436-608006-178006-1713797(Top 49%)8831(Top 55%)8831(Top 370%)
Finish26.22 mi1.02 mi10547-1118024-188024-1813973(Top 49%)8993(Top 56%)8993(Top 377%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9379

Males

7758

M45-49

7758

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9898

Males

8084

M45-49

8084

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9379

Males

7758

M45-49

7758

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9351

Males

7659

M45-49

7659

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9792

Males

7920

M45-49

7920

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9841

Males

7780

M45-49

7780

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

10379

Males

7877

M45-49

7877

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

11306

Males

8185

M45-49

8185

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12678

Males

8674

M45-49

8674

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13985

Males

9270

M45-49

9270

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

12136

Males

8293

M45-49

8293

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

11216

Males

7769

M45-49

7769

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13264

Males

8639

M45-49

8639

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13797

Males

8831

M45-49

8831

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13973

Males

8993

M45-49

8993

Passing Analysis

Category:
Athletes Passed
1893*
Passed By
1961
Net Change
-72
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10475
5K → 10K431127+304#10475#10171
10K → 15K352*61+291#10171#9880
15K → 20K25987+172#9880#9708
20K → Half3239-7#9708#9715
Half → 25K169141+28#9715#9687
25K → 30K204267-63#9687#9750
30K → 20M90171-82#9750#9832
20M → 21M55238-185#9832#10017
21M → 35K36178-143#10017#10160
35K → 23M75186-111#10160#10271
23M → 24M7487-13#10271#10284
24M → 40K58150-92#10284#10376
40K → 25.2M1373-60#10376#10436
25.2M → Finish45156-111#10436#10547
TOTALS1893*1961-72

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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