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BOSTON MARATHON 2025

Chun Wa Tong

Bib: 8895•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
6:52/mi
21:19
↑ 97↓ 3451.5%
10K· 6.21 mi
6:49/mi
42:29
↑ 79↓ 1380.4%
15K· 9.32 mi
6:48/mi
1:03:36
↑ 67↓ 78
20K· 12.43 mi
6:48/mi
1:24:43
↑ 106↓ 860.1%
Half· 13.11 mi
6:39/mi
1:29:15
↑ 19↓ 370.5%
25K· 15.53 mi
6:50/mi
1:45:48
↑ 66↓ 880.2%
30K· 18.64 mi
6:58/mi
2:07:28
↑ 181↓ 1480.2%
20M
6:57/mi
2:16:54
↑ 64↓ 500.2%
21M
7:16/mi
2:24:10
↑ 106↓ 241.6%
35K· 21.75 mi
6:38/mi
2:29:08
↑ 17↓ 861.7%
23M
6:47/mi
2:37:38
↑ 23↓ 630.6%
24M
6:33/mi
2:44:11
↓ 821.3%
40K· 24.85 mi
6:38/mi
2:49:51
↓ 200.3%
25.2M
7:18/mi
2:52:22
↑ 13↓ 160.2%
Finish· 26.22 mi
6:27/mi
2:58:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:15
Pace6:48 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:41
Pace6:50 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4021:196:5221:19
6:52
-
10K
6.21 mi11:07:5042:296:5021:10
6:49
-0:03
15K
9.32 mi11:28:571:03:366:4921:07
6:48
-0:01
20K
12.43 mi11:50:041:24:436:4921:07
6:48
0:00
Half
13.11 mi11:54:361:29:156:484:32
6:39
-0:09
25K
15.53 mi12:11:091:45:486:4916:33
6:50
+0:11
30K
18.64 mi12:32:492:07:286:5021:40
6:58
+0:08
20M
20.00 mi12:42:152:16:546:519:26
6:57
-0:01
21M
21.00 mi12:49:312:24:106:527:16
7:16
+0:19
35K
21.75 mi12:54:292:29:086:514:58
6:38
-0:38
23M
23.00 mi13:02:592:37:386:518:30
6:47
+0:09
24M
24.00 mi13:09:322:44:116:506:33
6:33
-0:14
40K
24.85 mi13:15:122:49:516:505:40
6:38
+0:05
25.2M
25.20 mi13:17:432:52:226:502:31
7:18
+0:40
Finish
26.22 mi13:24:172:58:566:506:34
6:27
-0:51

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

6:27 /mi

Average Pace

6:50 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:09

95% of race

Time at Steady Pace

9:47

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:46:4021:196:5221:19
6:52
#6772
10K
6.21 mi11:07:5042:296:5021:10
6:49
#6639
15K
9.32 mi11:28:571:03:366:4921:07
6:48
#6440
20K
12.43 mi11:50:041:24:436:4921:07
6:48
#6091
Half
13.11 mi11:54:361:29:156:484:32
6:39
#6021
25K
15.53 mi12:11:091:45:486:4916:33
6:50
#5811
30K
18.64 mi12:32:492:07:286:5021:40
6:58
#5504
20M
20.00 mi12:42:152:16:546:519:26
6:57
#5317
21M
21.00 mi12:49:312:24:106:527:16
7:16
#5140
35K
21.75 mi12:54:292:29:086:514:58
6:38
#5039
23M
23.00 mi13:02:592:37:386:518:30
6:47
#4822
24M
24.00 mi13:09:322:44:116:506:33
6:33
#4635
40K
24.85 mi13:15:122:49:516:505:40
6:38
#4491
25.2M
25.20 mi13:17:432:52:226:502:31
7:18
#4434
Finish
26.22 mi13:24:172:58:566:506:34
6:27
#4324
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6772613761376058(Top 21%)5508(Top 34%)5508(Top 245%)
10K6.21 mi3.10 mi6639+1336017+1206017+1206520(Top 23%)5897(Top 37%)5897(Top 262%)
15K9.32 mi3.11 mi6440+1995849+1685849+1686058(Top 21%)5508(Top 34%)5508(Top 245%)
20K12.43 mi3.11 mi6091+3495560+2895560+2895263(Top 19%)4838(Top 30%)4838(Top 215%)
Half13.11 mi0.68 mi6021+705498+625498+624828(Top 17%)4488(Top 28%)4488(Top 200%)
25K15.53 mi2.42 mi5811+2105310+1885310+1885072(Top 18%)4649(Top 29%)4649(Top 207%)
30K18.64 mi3.11 mi5504+3075041+2695041+2694539(Top 16%)4147(Top 26%)4147(Top 185%)
20M20.00 mi1.36 mi5317+1874872+1694872+1693781(Top 13%)3480(Top 22%)3480(Top 155%)
21M21.00 mi1.00 mi5140+1774716+1564716+1563484(Top 12%)3196(Top 20%)3196(Top 142%)
35K21.75 mi0.75 mi5039+1014627+894627+893192(Top 11%)2934(Top 18%)2934(Top 131%)
23M23.00 mi1.25 mi4822+2174434+1934434+1932663(Top 9%)2455(Top 15%)2455(Top 109%)
24M24.00 mi1.00 mi4635+1874265+1694265+1692282(Top 8%)2114(Top 13%)2114(Top 94%)
40K24.85 mi0.85 mi4491+1444131+1344131+1342106(Top 7%)1944(Top 12%)1944(Top 87%)
25.2M25.20 mi0.35 mi4434+574075+564075+562578(Top 9%)2312(Top 14%)2312(Top 103%)
Finish26.22 mi1.02 mi4324+1103979+963979+962545(Top 9%)2314(Top 14%)2314(Top 103%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

6058

Males

5508

M40-44

5508

5K→10K

3.1 - 6.2 mi

Top 23%
×5story building
+79ft-138ft

Overall

6520

Males

5897

M40-44

5897

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

6058

Males

5508

M40-44

5508

15K→20K

9.3 - 12.4 mi

Top 19%
×5story building
+106ft-86ft

Overall

5263

Males

4838

M40-44

4838

20K→Half

12.4 - 13.1 mi

Top 17%
×2story building
+19ft-37ft

Overall

4828

Males

4488

M40-44

4488

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

5072

Males

4649

M40-44

4649

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4539

Males

4147

M40-44

4147

30K→20M

18.6 - 20.0 mi

Top 13%
×5story building
+64ft-50ft

Overall

3781

Males

3480

M40-44

3480

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3484

Males

3196

M40-44

3196

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

3192

Males

2934

M40-44

2934

35K→23M

21.8 - 23.0 mi

Top 9%
×5story building
+23ft-63ft

Overall

2663

Males

2455

M40-44

2455

23M→24M

23.0 - 24.0 mi

Top 8%
×6story building
+12ft-82ft

Overall

2282

Males

2114

M40-44

2114

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

2106

Males

1944

M40-44

1944

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2578

Males

2312

M40-44

2312

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2545

Males

2314

M40-44

2314

Passing Analysis

Category:
Athletes Passed
2757
Passed By
309
Net Change
+2448
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6772
5K → 10K266133+133#6772#6639
10K → 15K26263+199#6639#6440
15K → 20K36213+349#6440#6091
20K → Half711+70#6091#6021
Half → 25K23525+210#6021#5811
25K → 30K33831+307#5811#5504
30K → 20M1958+187#5504#5317
20M → 21M18811+177#5317#5140
21M → 35K1076+101#5140#5039
35K → 23M2236+217#5039#4822
23M → 24M1870+187#4822#4635
24M → 40K1451+144#4635#4491
40K → 25.2M625+57#4491#4434
25.2M → Finish1166+110#4434#4324
TOTALS2757309+2448
📊

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