Boston Marathon logo
BOSTON MARATHON 2025

Henry Chan

Bib: 9028•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Masters (Masters Men)
#0 / 10463
Top 6%
Division (M45-49)
#0 / 2386
Top 7%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:15
Rank: #1841
Start → 5K
19:15 | 6:12/mi
10K· 6.21 mi
39:13
Rank: #2496 (-655)
5K → 10K
19:58 | 6:26/mi
15K· 9.32 mi
59:30
Rank: #2887 (-391)
10K → 15K
20:17 | 6:32/mi
20K· 12.43 mi
1:20:14
Rank: #3204 (-317)
15K → 20K
20:44 | 6:40/mi
Half· 13.11 mi
1:24:39
Rank: #3217 (-13)
20K → Half
4:25 | 6:28/mi
25K· 15.53 mi
1:40:55
Rank: #3353 (-136)
Half → 25K
16:16 | 6:43/mi
30K· 18.64 mi
2:02:18
Rank: #3393 (-40)
25K → 30K
21:23 | 6:53/mi
20M
2:11:40
Rank: #3362 (+31)
30K → 20M
9:22 | 6:54/mi
21M
2:18:55
Rank: #3336 (+26)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:23:58
Rank: #3321 (+15)
21M → 35K
5:03 | 6:45/mi
23M
2:32:36
Rank: #3252 (+69)
35K → 23M
8:38 | 6:54/mi
24M
2:39:17
Rank: #3200 (+52)
23M → 24M
6:41 | 6:41/mi
40K· 24.85 mi
2:45:07
Rank: #3142 (+58)
24M → 40K
5:50 | 6:49/mi
25.2M
2:47:43
Rank: #3122 (+20)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:54:31
Rank: #3124 (-2)
25.2M → Finish
6:48 | 6:40/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:39
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:29:52
Pace6:51 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:09:5819:156:1219:15
6:12
-
10K
6.21 mi11:29:5639:136:1919:58
6:26
+0:14
15K
9.32 mi11:50:1359:306:2320:17
6:32
+0:06
20K
12.43 mi12:10:571:20:146:2720:44
6:40
+0:08
Half
13.11 mi12:15:221:24:396:274:25
6:28
-0:12
25K
15.53 mi12:31:381:40:556:3016:16
6:43
+0:15
30K
18.64 mi12:53:012:02:186:3421:23
6:53
+0:10
20M
20.00 mi13:02:232:11:406:359:22
6:54
+0:01
21M
21.00 mi13:09:382:18:556:377:15
7:15
+0:21
35K
21.75 mi13:14:412:23:586:375:03
6:45
-0:30
23M
23.00 mi13:23:192:32:366:388:38
6:54
+0:09
24M
24.00 mi13:30:002:39:176:386:41
6:41
-0:13
40K
24.85 mi13:35:502:45:076:395:50
6:49
+0:08
25.2M
25.20 mi13:38:262:47:436:392:36
7:32
+0:43
Finish
26.22 mi13:45:142:54:316:406:48
6:40
-0:52

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

6:12 /mi

Average Pace

6:40 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:03:55

37% of race

Time at Steady Pace

1:01:22

35% of race

Time at Slower Pace

49:14

28% of race

Average Pace: 6:39 /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 mi11:09:5819:156:1219:15
6:12
#1841
10K
6.21 mi11:29:5639:136:1919:58
6:26
#2496
15K
9.32 mi11:50:1359:306:2320:17
6:32
#2887
20K
12.43 mi12:10:571:20:146:2720:44
6:40
#3204
Half
13.11 mi12:15:221:24:396:274:25
6:28
#3217
25K
15.53 mi12:31:381:40:556:3016:16
6:43
#3353
30K
18.64 mi12:53:012:02:186:3421:23
6:53
#3393
20M
20.00 mi13:02:232:11:406:359:22
6:54
#3362
21M
21.00 mi13:09:382:18:556:377:15
7:15
#3336
35K
21.75 mi13:14:412:23:586:375:03
6:45
#3321
23M
23.00 mi13:23:192:32:366:388:38
6:54
#3252
24M
24.00 mi13:30:002:39:176:386:41
6:41
#3200
40K
24.85 mi13:35:502:45:076:395:50
6:49
#3142
25.2M
25.20 mi13:38:262:47:436:392:36
7:32
#3122
Finish
26.22 mi13:45:142:54:316:406:48
6:40
#3124
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi1841174917493727(Top 13%)3516(Top 22%)3516(Top 147%)
10K6.21 mi3.10 mi2496-6552378-6292378-6293209(Top 11%)3050(Top 19%)3050(Top 128%)
15K9.32 mi3.11 mi2887-3912751-3732751-3733727(Top 13%)3516(Top 22%)3516(Top 147%)
20K12.43 mi3.11 mi3204-3173051-3003051-3004187(Top 15%)3924(Top 24%)3924(Top 164%)
Half13.11 mi0.68 mi3217-133064-133064-133471(Top 12%)3287(Top 20%)3287(Top 138%)
25K15.53 mi2.42 mi3353-1363188-1243188-1244186(Top 15%)3888(Top 24%)3888(Top 163%)
30K18.64 mi3.11 mi3393-403210-223210-223946(Top 14%)3634(Top 23%)3634(Top 152%)
20M20.00 mi1.36 mi3362+313180+303180+303444(Top 12%)3180(Top 20%)3180(Top 133%)
21M21.00 mi1.00 mi3336+263154+263154+263348(Top 12%)3070(Top 19%)3070(Top 129%)
35K21.75 mi0.75 mi3321+153137+173137+173766(Top 13%)3388(Top 21%)3388(Top 142%)
23M23.00 mi1.25 mi3252+693070+673070+673169(Top 11%)2889(Top 18%)2889(Top 121%)
24M24.00 mi1.00 mi3200+523020+503020+502884(Top 10%)2624(Top 16%)2624(Top 110%)
40K24.85 mi0.85 mi3142+582963+572963+572937(Top 10%)2646(Top 16%)2646(Top 111%)
25.2M25.20 mi0.35 mi3122+202939+242939+243521(Top 12%)3065(Top 19%)3065(Top 128%)
Finish26.22 mi1.02 mi3124-22943-42943-43701(Top 13%)3206(Top 20%)3206(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3727

Males

3516

M45-49

3516

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3209

Males

3050

M45-49

3050

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3727

Males

3516

M45-49

3516

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4187

Males

3924

M45-49

3924

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3471

Males

3287

M45-49

3287

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4186

Males

3888

M45-49

3888

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3946

Males

3634

M45-49

3634

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3444

Males

3180

M45-49

3180

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3348

Males

3070

M45-49

3070

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3766

Males

3388

M45-49

3388

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3169

Males

2889

M45-49

2889

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2884

Males

2624

M45-49

2624

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2937

Males

2646

M45-49

2646

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3521

Males

3065

M45-49

3065

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3701

Males

3206

M45-49

3206

Passing Analysis

Category:
Athletes Passed
677
Passed By
1960
Net Change
-1283
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1841
5K → 10K5660-655#1841#2496
10K → 15K18409-391#2496#2887
15K → 20K25342-317#2887#3204
20K → Half1023-13#3204#3217
Half → 25K36172-136#3217#3353
25K → 30K101141-40#3353#3393
30K → 20M7140+31#3393#3362
20M → 21M6337+26#3362#3336
21M → 35K4126+15#3336#3321
35K → 23M9829+69#3321#3252
23M → 24M6210+52#3252#3200
24M → 40K6810+58#3200#3142
40K → 25.2M3616+20#3142#3122
25.2M → Finish4345-2#3122#3124
TOTALS6771960-1283
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing