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BOSTON MARATHON 2025

Chung Ma

Bib: 4129•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 22%
Masters (Masters Men)
#0 / 10463
Top 9%
Division (M50-54)
#0 / 1996
Top 5%
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
6:45/mi
20:57
↑ 97↓ 3451.5%
10K· 6.21 mi
6:42/mi
41:45
↑ 79↓ 1380.4%
15K· 9.32 mi
6:40/mi
1:02:28
↑ 67↓ 78
20K· 12.43 mi
6:53/mi
1:23:50
↑ 106↓ 860.1%
Half· 13.11 mi
6:42/mi
1:28:25
↑ 19↓ 370.5%
25K· 15.53 mi
6:42/mi
1:44:40
↑ 66↓ 880.2%
30K· 18.64 mi
6:49/mi
2:05:51
↑ 181↓ 1480.2%
20M
6:56/mi
2:15:16
↑ 64↓ 500.2%
21M
7:09/mi
2:22:25
↑ 106↓ 241.6%
35K· 21.75 mi
6:32/mi
2:27:18
↑ 17↓ 861.7%
23M
6:51/mi
2:35:53
↑ 23↓ 630.6%
24M
6:42/mi
2:42:35
↓ 821.3%
40K· 24.85 mi
6:51/mi
2:48:26
↓ 200.3%
25.2M
7:21/mi
2:50:58
↑ 13↓ 160.2%
Finish· 26.22 mi
6:29/mi
2:57:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:25
Pace6:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:10
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4420:576:4520:57
6:45
-
10K
6.21 mi10:44:3241:456:4320:48
6:42
-0:03
15K
9.32 mi11:05:151:02:286:4220:43
6:40
-0:02
20K
12.43 mi11:26:371:23:506:4521:22
6:53
+0:13
Half
13.11 mi11:31:121:28:256:454:35
6:42
-0:11
25K
15.53 mi11:47:271:44:406:4416:16
6:42
0:00
30K
18.64 mi12:08:382:05:516:4521:11
6:49
+0:07
20M
20.00 mi12:18:032:15:166:469:25
6:56
+0:07
21M
21.00 mi12:25:122:22:256:477:09
7:09
+0:13
35K
21.75 mi12:30:052:27:186:464:53
6:32
-0:37
23M
23.00 mi12:38:402:35:536:478:35
6:51
+0:19
24M
24.00 mi12:45:222:42:356:466:42
6:42
-0:09
40K
24.85 mi12:51:132:48:266:475:51
6:51
+0:09
25.2M
25.20 mi12:53:452:50:586:472:32
7:21
+0:30
Finish
26.22 mi13:00:212:57:346:476:36
6:29
-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

6:29 /mi

Average Pace

6:47 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:53

95% of race

Time at Steady Pace

9:41

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi10:23:4420:576:4520:57
6:45
#5813
10K
6.21 mi10:44:3241:456:4320:48
6:42
#5541
15K
9.32 mi11:05:151:02:286:4220:43
6:40
#5272
20K
12.43 mi11:26:371:23:506:4521:22
6:53
#5431
Half
13.11 mi11:31:121:28:256:454:35
6:42
#5421
25K
15.53 mi11:47:271:44:406:4416:16
6:42
#5131
30K
18.64 mi12:08:382:05:516:4521:11
6:49
#4754
20M
20.00 mi12:18:032:15:166:469:25
6:56
#4627
21M
21.00 mi12:25:122:22:256:477:09
7:09
#4456
35K
21.75 mi12:30:052:27:186:464:53
6:32
#4340
23M
23.00 mi12:38:402:35:536:478:35
6:51
#4211
24M
24.00 mi12:45:222:42:356:466:42
6:42
#4117
40K
24.85 mi12:51:132:48:266:475:51
6:51
#4049
25.2M
25.20 mi12:53:452:50:586:472:32
7:21
#4008
Finish
26.22 mi13:00:212:57:346:476:36
6:29
#3915
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5813535853584787(Top 17%)4468(Top 28%)4468(Top 224%)
10K6.21 mi3.10 mi5541+2725121+2375121+2375284(Top 19%)4896(Top 30%)4896(Top 245%)
15K9.32 mi3.11 mi5272+2694891+2304891+2304787(Top 17%)4468(Top 28%)4468(Top 224%)
20K12.43 mi3.11 mi5431-1595016-1255016-1255998(Top 21%)5431(Top 34%)5431(Top 272%)
Half13.11 mi0.68 mi5421+105004+125004+125322(Top 19%)4881(Top 30%)4881(Top 245%)
25K15.53 mi2.42 mi5131+2904755+2494755+2494184(Top 15%)3886(Top 24%)3886(Top 195%)
30K18.64 mi3.11 mi4754+3774404+3514404+3513555(Top 13%)3300(Top 20%)3300(Top 165%)
20M20.00 mi1.36 mi4627+1274291+1134291+1133667(Top 13%)3373(Top 21%)3373(Top 169%)
21M21.00 mi1.00 mi4456+1714135+1564135+1562893(Top 10%)2679(Top 17%)2679(Top 134%)
35K21.75 mi0.75 mi4340+1164030+1054030+1052602(Top 9%)2421(Top 15%)2421(Top 121%)
23M23.00 mi1.25 mi4211+1293910+1203910+1202972(Top 10%)2714(Top 17%)2714(Top 136%)
24M24.00 mi1.00 mi4117+943820+903820+902972(Top 10%)2696(Top 17%)2696(Top 135%)
40K24.85 mi0.85 mi4049+683754+663754+663029(Top 11%)2725(Top 17%)2725(Top 137%)
25.2M25.20 mi0.35 mi4008+413713+413713+412723(Top 10%)2425(Top 15%)2425(Top 121%)
Finish26.22 mi1.02 mi3915+933621+923621+922690(Top 9%)2420(Top 15%)2420(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4787

Males

4468

M50-54

4468

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

5284

Males

4896

M50-54

4896

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4787

Males

4468

M50-54

4468

15K→20K

9.3 - 12.4 mi

Top 21%
×5story building
+106ft-86ft

Overall

5998

Males

5431

M50-54

5431

20K→Half

12.4 - 13.1 mi

Top 19%
×2story building
+19ft-37ft

Overall

5322

Males

4881

M50-54

4881

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4184

Males

3886

M50-54

3886

25K→30K

15.5 - 18.6 mi

Top 13%
×9story building
+181ft-148ft

Overall

3555

Males

3300

M50-54

3300

30K→20M

18.6 - 20.0 mi

Top 13%
×5story building
+64ft-50ft

Overall

3667

Males

3373

M50-54

3373

20M→21M

20.0 - 21.0 mi

Top 10%
×8story building
+106ft-24ft

Overall

2893

Males

2679

M50-54

2679

21M→35K

21.0 - 21.8 mi

Top 9%
×7story building
+17ft-86ft

Overall

2602

Males

2421

M50-54

2421

35K→23M

21.8 - 23.0 mi

Top 10%
×5story building
+23ft-63ft

Overall

2972

Males

2714

M50-54

2714

23M→24M

23.0 - 24.0 mi

Top 10%
×6story building
+12ft-82ft

Overall

2972

Males

2696

M50-54

2696

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3029

Males

2725

M50-54

2725

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2723

Males

2425

M50-54

2425

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2690

Males

2420

M50-54

2420

Passing Analysis

Category:
Athletes Passed
2371
Passed By
473
Net Change
+1898
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5813
5K → 10K35785+272#5813#5541
10K → 15K29728+269#5541#5272
15K → 20K78237-159#5272#5431
20K → Half3323+10#5431#5421
Half → 25K2988+290#5421#5131
25K → 30K39518+377#5131#4754
30K → 20M14417+127#4754#4627
20M → 21M1798+171#4627#4456
21M → 35K1160+116#4456#4340
35K → 23M14213+129#4340#4211
23M → 24M1028+94#4211#4117
24M → 40K746+68#4117#4049
40K → 25.2M465+41#4049#4008
25.2M → Finish11017+93#4008#3915
TOTALS2371473+1898
📊

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