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BOSTON MARATHON 2025

Chung Wai Chan

Bib: 10660•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 38%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 40%
Division (M45-49)
#0 / 2386
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
7:08/mi
22:09
↑ 97↓ 3451.5%
10K· 6.21 mi
7:20/mi
44:57
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:07:46
↑ 67↓ 78
20K· 12.43 mi
7:22/mi
1:30:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:35:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:31/mi
1:53:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:19:14
↑ 181↓ 1480.2%
20M
8:35/mi
2:30:54
↑ 64↓ 500.2%
21M
9:38/mi
2:40:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:46:32
↑ 17↓ 861.7%
23M
8:03/mi
2:56:37
↑ 23↓ 630.6%
24M
7:51/mi
3:04:28
↓ 821.3%
40K· 24.85 mi
7:57/mi
3:11:16
↓ 200.3%
25.2M
9:14/mi
3:14:27
↑ 13↓ 160.2%
Finish· 26.22 mi
7:56/mi
3:22:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:36
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:46:56
Pace8:09 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0422:097:0822:09
7:08
-
10K
6.21 mi11:10:5244:577:1422:48
7:20
+0:12
15K
9.32 mi11:33:411:07:467:1622:49
7:21
+0:01
20K
12.43 mi11:56:351:30:407:1822:54
7:22
+0:01
Half
13.11 mi12:01:311:35:367:184:56
7:14
-0:08
25K
15.53 mi12:19:451:53:507:2018:14
7:31
+0:17
30K
18.64 mi12:45:092:19:147:2825:24
8:11
+0:40
20M
20.00 mi12:56:492:30:547:3311:40
8:35
+0:24
21M
21.00 mi13:06:272:40:327:399:38
9:38
+1:03
35K
21.75 mi13:12:272:46:327:396:00
8:01
-1:37
23M
23.00 mi13:22:322:56:377:4110:05
8:03
+0:02
24M
24.00 mi13:30:233:04:287:417:51
7:51
-0:12
40K
24.85 mi13:37:113:11:167:426:48
7:57
+0:06
25.2M
25.20 mi13:40:223:14:277:433:11
9:14
+1:17
Finish
26.22 mi13:48:273:22:327:448:05
7:56
-1:18

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

7:08 /mi

Average Pace

7:44 /mi

Slowest Pace

9:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:50

56% of race

Time at Steady Pace

1:04:13

32% of race

Time at Slower Pace

24:29

12% of race

Average Pace: 7:43 /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 mi10:48:0422:097:0822:09
7:08
#8881
10K
6.21 mi11:10:5244:577:1422:48
7:20
#9747
15K
9.32 mi11:33:411:07:467:1622:49
7:21
#9943
20K
12.43 mi11:56:351:30:407:1822:54
7:22
#9831
Half
13.11 mi12:01:311:35:367:184:56
7:14
#9800
25K
15.53 mi12:19:451:53:507:2018:14
7:31
#9800
30K
18.64 mi12:45:092:19:147:2825:24
8:11
#10299
20M
20.00 mi12:56:492:30:547:3311:40
8:35
#10646
21M
21.00 mi13:06:272:40:327:399:38
9:38
#11027
35K
21.75 mi13:12:272:46:327:396:00
8:01
#11052
23M
23.00 mi13:22:322:56:377:4110:05
8:03
#10973
24M
24.00 mi13:30:233:04:287:417:51
7:51
#10902
40K
24.85 mi13:37:113:11:167:426:48
7:57
#10830
25.2M
25.20 mi13:40:223:14:277:433:11
9:14
#10865
Finish
26.22 mi13:48:273:22:327:448:05
7:56
#10893
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi88817540754010351(Top 36%)8270(Top 51%)8270(Top 347%)
10K6.21 mi3.10 mi9747-8668028-4888028-48810643(Top 37%)8483(Top 53%)8483(Top 356%)
15K9.32 mi3.11 mi9943-1968101-738101-7310351(Top 36%)8270(Top 51%)8270(Top 347%)
20K12.43 mi3.11 mi9831+1128019+828019+829643(Top 34%)7815(Top 49%)7815(Top 328%)
Half13.11 mi0.68 mi9800+317998+217998+219355(Top 33%)7698(Top 48%)7698(Top 323%)
25K15.53 mi2.42 mi98007964+347964+3410133(Top 36%)7958(Top 49%)7958(Top 334%)
30K18.64 mi3.11 mi10299-4998171-2078171-20712621(Top 44%)8956(Top 56%)8956(Top 375%)
20M20.00 mi1.36 mi10646-3478291-1208291-12014310(Top 50%)9592(Top 60%)9592(Top 402%)
21M21.00 mi1.00 mi11027-3818442-1518442-15116671(Top 59%)10544(Top 65%)10544(Top 442%)
35K21.75 mi0.75 mi11052-258421+218421+2112351(Top 43%)8486(Top 53%)8486(Top 356%)
23M23.00 mi1.25 mi10973+798341+808341+8010411(Top 37%)7435(Top 46%)7435(Top 312%)
24M24.00 mi1.00 mi10902+718272+698272+6910170(Top 36%)7251(Top 45%)7251(Top 304%)
40K24.85 mi0.85 mi10830+728198+748198+749830(Top 35%)6965(Top 43%)6965(Top 292%)
25.2M25.20 mi0.35 mi10865-358202-48202-413014(Top 46%)8459(Top 53%)8459(Top 355%)
Finish26.22 mi1.02 mi10893-288178+248178+2412390(Top 44%)8223(Top 51%)8223(Top 345%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10351

Males

8270

M45-49

8270

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10643

Males

8483

M45-49

8483

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10351

Males

8270

M45-49

8270

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9643

Males

7815

M45-49

7815

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

9355

Males

7698

M45-49

7698

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10133

Males

7958

M45-49

7958

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12621

Males

8956

M45-49

8956

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14310

Males

9592

M45-49

9592

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

16671

Males

10544

M45-49

10544

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12351

Males

8486

M45-49

8486

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10411

Males

7435

M45-49

7435

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10170

Males

7251

M45-49

7251

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9830

Males

6965

M45-49

6965

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13014

Males

8459

M45-49

8459

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

12390

Males

8223

M45-49

8223

Passing Analysis

Category:
Athletes Passed
1270
Passed By
3278
Net Change
-2012
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8881
5K → 10K44909-866#8881#9747
10K → 15K104299-196#9747#9943
15K → 20K235123+112#9943#9831
20K → Half5120+31#9831#9800
Half → 25K1531530#9800#9800
25K → 30K110607-499#9800#10299
30K → 20M49396-347#10299#10646
20M → 21M29410-381#10646#11027
21M → 35K5378-25#11027#11052
35K → 23M14566+79#11052#10973
23M → 24M10736+71#10973#10902
24M → 40K10735+72#10902#10830
40K → 25.2M2459-35#10830#10865
25.2M → Finish5987-28#10865#10893
TOTALS12703278-2012
📊

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