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BOSTON MARATHON 2025

Donghui Chen

VA

Bib: 8004 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 21%
Gender (Male)
#0 / 16105
Top 33%
Masters (Masters Men)
#0 / 10463
Top 19%
Division (M50-54)
#0 / 1996
Top 14%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:55/mi
21:29
↑ 97↓ 345
10K· 6.21 mi
6:52/mi
42:48
↑ 79↓ 138
15K· 9.32 mi
7:01/mi
1:04:36
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:26:48
↑ 106↓ 86
Half· 13.11 mi
6:56/mi
1:31:32
↑ 19↓ 37
25K· 15.53 mi
7:03/mi
1:48:37
↑ 66↓ 88
30K· 18.64 mi
7:13/mi
2:11:03
↑ 181↓ 148
20M
7:18/mi
2:20:58
↑ 64↓ 50
21M
7:38/mi
2:28:36
↑ 106↓ 24
35K· 21.75 mi
7:01/mi
2:33:51
↑ 17↓ 86
23M
7:10/mi
2:42:50
↑ 23↓ 63
24M
7:06/mi
2:49:56
↓ 82
40K· 24.85 mi
7:21/mi
2:56:13
↓ 20
25.2M
8:01/mi
2:58:59
↑ 13↓ 16
Finish· 26.22 mi
7:00/mi
3:06:07
↑ 22↓ 21
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:31:326:59 /mi⚡ faster
2nd Half
1:34:357:13 /mi+3.3%
Positive split — 3.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
21:296:553.11 mi21:29
6:55
-
10K
42:486:533.10 mi21:19
6:52
-0:03
15K
1:04:366:563.11 mi21:48
7:01
+0:09
20K
1:26:486:593.11 mi22:12
7:09
+0:08
Half(13.11 mi)
1:31:326:590.68 mi4:44
6:56
-0:13
25K
1:48:377:002.42 mi17:05
7:03
+0:07
30K
2:11:037:023.11 mi22:26
7:13
+0:10
20M
2:20:587:031.36 mi9:55
7:18
+0:05
21M
2:28:367:051.00 mi7:38
7:38
+0:20
35K
2:33:517:040.75 mi5:15
7:01
-0:37
23M
2:42:507:051.25 mi8:59
7:10
+0:09
24M
2:49:567:051.00 mi7:06
7:06
-0:04
40K
2:56:137:050.85 mi6:17
7:21
+0:15
25.2M
2:58:597:060.35 mi2:46
8:01
+0:40
Finish(26.22 mi)
3:06:077:061.02 mi7:08
7:00
-1:01
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:52 /mi

Average Pace

7:06 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:55:43

94% of race

Time at Steady Pace

10:24

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:06 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi717564306430772467576757
10K3.10 mi7060+1156337+936337+93695062376237
15K3.11 mi7303-2436508-1716508-171772467576757
20K3.11 mi7387-846548-406548-40776767216721
Half(13.11 mi)0.68 mi7363+246529+196529+19709362706270
25K2.42 mi7205+1586401+1286401+128660058305830
30K3.11 mi6857+3486097+3046097+304600853095309
20M1.36 mi6706+1515965+1325965+132575550165016
21M1.00 mi6540+1665815+1505815+150527745764576
35K0.75 mi6462+785750+655750+65543446744674
23M1.25 mi6299+1635604+1465604+146471141084108
24M1.00 mi6194+1055512+925512+92520243924392
40K0.85 mi6125+695441+715441+71588947764776
25.2M0.35 mi6090+355405+365405+36599347194719
Finish(26.22 mi)1.02 mi6023+675335+705335+70570345404540

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7724

Males

6757

M50-54

6757

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6950

Males

6237

M50-54

6237

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7724

Males

6757

M50-54

6757

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7767

Males

6721

M50-54

6721

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

7093

Males

6270

M50-54

6270

Half→25K

13.1 - 15.5 mi

Top 23%
×4story building
+66ft-88ft

Overall

6600

Males

5830

M50-54

5830

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

6008

Males

5309

M50-54

5309

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5755

Males

5016

M50-54

5016

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5277

Males

4576

M50-54

4576

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5434

Males

4674

M50-54

4674

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4711

Males

4108

M50-54

4108

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

5202

Males

4392

M50-54

4392

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5889

Males

4776

M50-54

4776

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5993

Males

4719

M50-54

4719

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5703

Males

4540

M50-54

4540

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#7175
5K → 10K
154269+115
#7175 → #7060
10K → 15K
31774-243
#7060 → #7303
15K → 20K
187103-84
#7303 → #7387
20K → Half
1236+24
#7387 → #7363
Half → 25K
36194+158
#7363 → #7205
25K → 30K
32380+348
#7205 → #6857
30K → 20M
16167+151
#6857 → #6706
20M → 21M
8174+166
#6706 → #6540
21M → 35K
1189+78
#6540 → #6462
35K → 23M
11174+163
#6462 → #6299
23M → 24M
8113+105
#6299 → #6194
24M → 40K
2493+69
#6194 → #6125
40K → 25.2M
641+35
#6125 → #6090
25.2M → Finish
3299+67
#6090 → #6023
TOTALS
8542006+1152
#7175 → #6023

Passing Visualized

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