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BOSTON MARATHON 2025

Changji Fan

Bib: 15819•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:40/mi
23:49
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
48:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:13:47
↑ 67↓ 78
20K· 12.43 mi
8:34/mi
1:40:24
↑ 106↓ 860.1%
Half· 13.11 mi
8:59/mi
1:46:32
↑ 19↓ 370.5%
25K· 15.53 mi
9:05/mi
2:08:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:54/mi
2:39:19
↑ 181↓ 1480.2%
20M
10:01/mi
2:52:56
↑ 64↓ 500.2%
21M
10:57/mi
3:03:53
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:10:47
↑ 17↓ 861.7%
23M
9:38/mi
3:22:51
↑ 23↓ 630.6%
24M
9:10/mi
3:32:01
↓ 821.3%
40K· 24.85 mi
9:37/mi
3:40:14
↓ 200.3%
25.2M
10:52/mi
3:43:59
↑ 13↓ 160.2%
Finish· 26.22 mi
9:18/mi
3:53:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:32
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time2:06:56
Pace9:41 /mi
📊Positive Split: 19.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:2623:497:4023:49
7:40
-
10K
6.21 mi11:20:1348:367:4924:47
7:59
+0:19
15K
9.32 mi11:45:241:13:477:5525:11
8:06
+0:07
20K
12.43 mi12:12:011:40:248:0526:37
8:34
+0:28
Half
13.11 mi12:18:091:46:328:086:08
8:59
+0:25
25K
15.53 mi12:40:112:08:348:1722:02
9:05
+0:06
30K
18.64 mi13:10:562:39:198:3330:45
9:54
+0:49
20M
20.00 mi13:24:332:52:568:3913:37
10:01
+0:07
21M
21.00 mi13:35:303:03:538:4510:57
10:57
+0:56
35K
21.75 mi13:42:243:10:478:466:54
9:13
-1:44
23M
23.00 mi13:54:283:22:518:4912:04
9:38
+0:25
24M
24.00 mi14:03:383:32:018:509:10
9:10
-0:28
40K
24.85 mi14:11:513:40:148:528:13
9:37
+0:27
25.2M
25.20 mi14:15:363:43:598:533:45
10:52
+1:15
Finish
26.22 mi14:25:053:53:288:559:29
9:18
-1:34

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

7:40 /mi

Average Pace

8:55 /mi

Slowest Pace

10:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:24

43% of race

Time at Steady Pace

1:14:00

32% of race

Time at Slower Pace

59:04

25% of race

Average Pace: 8:54 /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 mi10:55:2623:497:4023:49
7:40
#13656
10K
6.21 mi11:20:1348:367:4924:47
7:59
#14953
15K
9.32 mi11:45:241:13:477:5525:11
8:06
#15637
20K
12.43 mi12:12:011:40:248:0526:37
8:34
#16522
Half
13.11 mi12:18:091:46:328:086:08
8:59
#16869
25K
15.53 mi12:40:112:08:348:1722:02
9:05
#17455
30K
18.64 mi13:10:562:39:198:3330:45
9:54
#18421
20M
20.00 mi13:24:332:52:568:3913:37
10:01
#18697
21M
21.00 mi13:35:303:03:538:4510:57
10:57
#18938
35K
21.75 mi13:42:243:10:478:466:54
9:13
#18948
23M
23.00 mi13:54:283:22:518:4912:04
9:38
#18983
24M
24.00 mi14:03:383:32:018:509:10
9:10
#18957
40K
24.85 mi14:11:513:40:148:528:13
9:37
#18941
25.2M
25.20 mi14:15:363:43:598:533:45
10:52
#18972
Finish
26.22 mi14:25:053:53:288:559:29
9:18
#19032
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi136569938993816766(Top 59%)11126(Top 69%)11126(Top 675%)
10K6.21 mi3.10 mi14953-129710390-45210390-45216290(Top 57%)10945(Top 68%)10945(Top 664%)
15K9.32 mi3.11 mi15637-68410673-28310673-28316766(Top 59%)11126(Top 69%)11126(Top 675%)
20K12.43 mi3.11 mi16522-88511030-35711030-35718636(Top 66%)11878(Top 74%)11878(Top 721%)
Half13.11 mi0.68 mi16869-34711162-13211162-13221740(Top 77%)13228(Top 82%)13228(Top 803%)
25K15.53 mi2.42 mi17455-58611374-21211374-21220290(Top 71%)12539(Top 78%)12539(Top 761%)
30K18.64 mi3.11 mi18421-96611754-38011754-38021287(Top 75%)12838(Top 80%)12838(Top 779%)
20M20.00 mi1.36 mi18697-27611845-9111845-9120994(Top 74%)12581(Top 78%)12581(Top 763%)
21M21.00 mi1.00 mi18938-24111913-6811913-6821238(Top 75%)12603(Top 78%)12603(Top 765%)
35K21.75 mi0.75 mi18948-1011899+1411899+1419246(Top 68%)11622(Top 72%)11622(Top 705%)
23M23.00 mi1.25 mi18983-3511890+911890+919218(Top 68%)11543(Top 72%)11543(Top 700%)
24M24.00 mi1.00 mi18957+2611855+3511855+3518169(Top 64%)11001(Top 68%)11001(Top 668%)
40K24.85 mi0.85 mi18941+1611819+3611819+3619116(Top 67%)11377(Top 71%)11377(Top 690%)
25.2M25.20 mi0.35 mi18972-3111826-711826-720224(Top 71%)11893(Top 74%)11893(Top 722%)
Finish26.22 mi1.02 mi19032-6011829-311829-320391(Top 72%)12002(Top 75%)12002(Top 728%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16766

Males

11126

M55-59

11126

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16290

Males

10945

M55-59

10945

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16766

Males

11126

M55-59

11126

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18636

Males

11878

M55-59

11878

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21740

Males

13228

M55-59

13228

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20290

Males

12539

M55-59

12539

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

21287

Males

12838

M55-59

12838

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

20994

Males

12581

M55-59

12581

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21238

Males

12603

M55-59

12603

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19246

Males

11622

M55-59

11622

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

19218

Males

11543

M55-59

11543

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18169

Males

11001

M55-59

11001

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

19116

Males

11377

M55-59

11377

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20224

Males

11893

M55-59

11893

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20391

Males

12002

M55-59

12002

Passing Analysis

Category:
Athletes Passed
714
Passed By
6090
Net Change
-5376
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13656
5K → 10K481345-1297#13656#14953
10K → 15K63747-684#14953#15637
15K → 20K51936-885#15637#16522
20K → Half4351-347#16522#16869
Half → 25K53639-586#16869#17455
25K → 30K571023-966#17455#18421
30K → 20M40316-276#18421#18697
20M → 21M47288-241#18697#18938
21M → 35K5161-10#18938#18948
35K → 23M84119-35#18948#18983
23M → 24M8054+26#18983#18957
24M → 40K7963+16#18957#18941
40K → 25.2M2253-31#18941#18972
25.2M → Finish3595-60#18972#19032
TOTALS7146090-5376
📊

Passing Visuals

Category:
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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