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BOSTON MARATHON 2025

Chunhao Huang

Bib: 1500•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 25%
Masters (Masters Men)
#0 / 10463
Top 11%
Division (M40-44)
#0 / 2247
Top 29%
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
6:12/mi
19:17
↑ 97↓ 3451.5%
10K· 6.21 mi
6:14/mi
38:38
↑ 79↓ 1380.4%
15K· 9.32 mi
6:21/mi
58:22
↑ 67↓ 78
20K· 12.43 mi
6:35/mi
1:18:50
↑ 106↓ 860.1%
Half· 13.11 mi
6:33/mi
1:23:18
↑ 19↓ 370.5%
25K· 15.53 mi
6:40/mi
1:39:29
↑ 66↓ 880.2%
30K· 18.64 mi
7:06/mi
2:01:34
↑ 181↓ 1480.2%
20M
7:30/mi
2:11:46
↑ 64↓ 500.2%
21M
8:07/mi
2:19:53
↑ 106↓ 241.6%
35K· 21.75 mi
7:17/mi
2:25:20
↑ 17↓ 861.7%
23M
7:38/mi
2:34:54
↑ 23↓ 630.6%
24M
7:28/mi
2:42:22
↓ 821.3%
40K· 24.85 mi
7:36/mi
2:48:52
↓ 200.3%
25.2M
8:22/mi
2:51:45
↑ 13↓ 160.2%
Finish· 26.22 mi
7:06/mi
2:58:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:18
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:35:41
Pace7:18 /mi
📊Positive Split: 14.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5319:176:1219:17
6:12
-
10K
6.21 mi10:39:1438:386:1319:21
6:14
+0:02
15K
9.32 mi10:58:5858:226:1619:44
6:21
+0:07
20K
12.43 mi11:19:261:18:506:2120:28
6:35
+0:14
Half
13.11 mi11:23:541:23:186:214:28
6:33
-0:02
25K
15.53 mi11:40:051:39:296:2416:11
6:40
+0:07
30K
18.64 mi12:02:102:01:346:3122:05
7:06
+0:26
20M
20.00 mi12:12:222:11:466:3510:12
7:30
+0:24
21M
21.00 mi12:20:292:19:536:408:07
8:07
+0:37
35K
21.75 mi12:25:562:25:206:415:27
7:17
-0:50
23M
23.00 mi12:35:302:34:546:449:34
7:38
+0:21
24M
24.00 mi12:42:582:42:226:467:28
7:28
-0:10
40K
24.85 mi12:49:282:48:526:486:30
7:36
+0:08
25.2M
25.20 mi12:52:212:51:456:492:53
8:22
+0:46
Finish
26.22 mi12:59:352:58:596:507:14
7:06
-1:16

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

6:50 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:29

56% of race

Time at Steady Pace

34:46

19% of race

Time at Slower Pace

44:44

25% 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 mi10:19:5319:176:1219:17
6:12
#1915
10K
6.21 mi10:39:1438:386:1319:21
6:14
#1971
15K
9.32 mi10:58:5858:226:1619:44
6:21
#2165
20K
12.43 mi11:19:261:18:506:2120:28
6:35
#2514
Half
13.11 mi11:23:541:23:186:214:28
6:33
#2591
25K
15.53 mi11:40:051:39:296:2416:11
6:40
#2772
30K
18.64 mi12:02:102:01:346:3122:05
7:06
#3165
20M
20.00 mi12:12:222:11:466:3510:12
7:30
#3398
21M
21.00 mi12:20:292:19:536:408:07
8:07
#3622
35K
21.75 mi12:25:562:25:206:415:27
7:17
#3719
23M
23.00 mi12:35:302:34:546:449:34
7:38
#3917
24M
24.00 mi12:42:582:42:226:467:28
7:28
#4056
40K
24.85 mi12:49:282:48:526:486:30
7:36
#4177
25.2M
25.20 mi12:52:212:51:456:492:53
8:22
#4240
Finish
26.22 mi12:59:352:58:596:507:14
7:06
#4335
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1915182118212655(Top 9%)2532(Top 16%)2532(Top 113%)
10K6.21 mi3.10 mi1971-561879-581879-582054(Top 7%)1957(Top 12%)1957(Top 87%)
15K9.32 mi3.11 mi2165-1942066-1872066-1872655(Top 9%)2532(Top 16%)2532(Top 113%)
20K12.43 mi3.11 mi2514-3492398-3322398-3323624(Top 13%)3423(Top 21%)3423(Top 152%)
Half13.11 mi0.68 mi2591-772474-762474-764040(Top 14%)3804(Top 24%)3804(Top 169%)
25K15.53 mi2.42 mi2772-1812643-1692643-1693958(Top 14%)3697(Top 23%)3697(Top 165%)
30K18.64 mi3.11 mi3165-3933009-3663009-3665357(Top 19%)4823(Top 30%)4823(Top 215%)
20M20.00 mi1.36 mi3398-2333214-2053214-2057034(Top 25%)5852(Top 36%)5852(Top 260%)
21M21.00 mi1.00 mi3622-2243410-1963410-1968018(Top 28%)6253(Top 39%)6253(Top 278%)
35K21.75 mi0.75 mi3719-973496-863496-867106(Top 25%)5758(Top 36%)5758(Top 256%)
23M23.00 mi1.25 mi3917-1983656-1603656-1607494(Top 26%)5863(Top 36%)5863(Top 261%)
24M24.00 mi1.00 mi4056-1393768-1123768-1127434(Top 26%)5781(Top 36%)5781(Top 257%)
40K24.85 mi0.85 mi4177-1213859-913859-917404(Top 26%)5662(Top 35%)5662(Top 252%)
25.2M25.20 mi0.35 mi4240-633912-533912-537896(Top 28%)5837(Top 36%)5837(Top 260%)
Finish26.22 mi1.02 mi4335-953989-773989-776353(Top 22%)4953(Top 31%)4953(Top 220%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21story building
+97ft-345ft

Overall

2655

Males

2532

M40-44

2532

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

2054

Males

1957

M40-44

1957

10K→15K

6.2 - 9.3 mi

Top 9%
×3story building
+67ft-78ft

Overall

2655

Males

2532

M40-44

2532

15K→20K

9.3 - 12.4 mi

Top 13%
×5story building
+106ft-86ft

Overall

3624

Males

3423

M40-44

3423

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

4040

Males

3804

M40-44

3804

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3958

Males

3697

M40-44

3697

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

5357

Males

4823

M40-44

4823

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

7034

Males

5852

M40-44

5852

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

8018

Males

6253

M40-44

6253

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

7106

Males

5758

M40-44

5758

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

7494

Males

5863

M40-44

5863

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7434

Males

5781

M40-44

5781

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7404

Males

5662

M40-44

5662

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7896

Males

5837

M40-44

5837

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

6353

Males

4953

M40-44

4953

Passing Analysis

Category:
Athletes Passed
334
Passed By
2754
Net Change
-2420
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1915
5K → 10K86142-56#1915#1971
10K → 15K27221-194#1971#2165
15K → 20K17366-349#2165#2514
20K → Half481-77#2514#2591
Half → 25K24205-181#2591#2772
25K → 30K29422-393#2772#3165
30K → 20M25258-233#3165#3398
20M → 21M8232-224#3398#3622
21M → 35K14111-97#3622#3719
35K → 23M32230-198#3719#3917
23M → 24M25164-139#3917#4056
24M → 40K15136-121#4056#4177
40K → 25.2M1174-63#4177#4240
25.2M → Finish17112-95#4240#4335
TOTALS3342754-2420
📊

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