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BOSTON MARATHON 2025

Yung Chan

Bib: 21915•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Top 20%
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
8:02/mi
24:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:58/mi
49:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:59/mi
1:14:30
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:39:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:45:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:19/mi
2:05:41
↑ 66↓ 880.2%
30K· 18.64 mi
9:20/mi
2:34:40
↑ 181↓ 1480.2%
20M
9:28/mi
2:47:32
↑ 64↓ 500.2%
21M
10:37/mi
2:58:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:36/mi
3:04:35
↑ 17↓ 861.7%
23M
9:20/mi
3:16:16
↑ 23↓ 630.6%
24M
9:42/mi
3:25:58
↓ 821.3%
40K· 24.85 mi
9:17/mi
3:33:54
↓ 200.3%
25.2M
9:28/mi
3:37:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:58/mi
3:46:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:32
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time2:00:46
Pace9:13 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3824:578:0224:57
8:02
-
10K
6.21 mi11:45:2449:438:0024:46
7:58
-0:04
15K
9.32 mi12:10:111:14:308:0024:47
7:59
+0:01
20K
12.43 mi12:35:391:39:588:0325:28
8:12
+0:13
Half
13.11 mi12:41:131:45:328:035:34
8:10
-0:02
25K
15.53 mi13:01:222:05:418:0520:09
8:19
+0:09
30K
18.64 mi13:30:212:34:408:1828:59
9:20
+1:01
20M
20.00 mi13:43:132:47:328:2312:52
9:28
+0:08
21M
21.00 mi13:53:502:58:098:2910:37
10:37
+1:09
35K
21.75 mi14:00:163:04:358:296:26
8:36
-2:01
23M
23.00 mi14:11:573:16:168:3211:41
9:20
+0:44
24M
24.00 mi14:21:393:25:588:359:42
9:42
+0:22
40K
24.85 mi14:29:353:33:548:367:56
9:17
-0:25
25.2M
25.20 mi14:32:513:37:108:373:16
9:28
+0:11
Finish
26.22 mi14:41:593:46:188:389:08
8:58
-0:30

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

7:58 /mi

Average Pace

8:38 /mi

Slowest Pace

10:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:41

56% of race

Time at Steady Pace

1:04:10

28% of race

Time at Slower Pace

36:27

16% of race

Average Pace: 8:38 /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 mi11:20:3824:578:0224:57
8:02
#16825
10K
6.21 mi11:45:2449:438:0024:46
7:58
#16515
15K
9.32 mi12:10:111:14:308:0024:47
7:59
#16269
20K
12.43 mi12:35:391:39:588:0325:28
8:12
#16273
Half
13.11 mi12:41:131:45:328:035:34
8:10
#16304
25K
15.53 mi13:01:222:05:418:0520:09
8:19
#16252
30K
18.64 mi13:30:212:34:408:1828:59
9:20
#16820
20M
20.00 mi13:43:132:47:328:2312:52
9:28
#16989
21M
21.00 mi13:53:502:58:098:2910:37
10:37
#17251
35K
21.75 mi14:00:163:04:358:296:26
8:36
#17190
23M
23.00 mi14:11:573:16:168:3211:41
9:20
#17248
24M
24.00 mi14:21:393:25:588:359:42
9:42
#17427
40K
24.85 mi14:29:353:33:548:367:56
9:17
#17445
25.2M
25.20 mi14:32:513:37:108:373:16
9:28
#17405
Finish
26.22 mi14:41:593:46:188:389:08
8:58
#17450
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi16825111321113215858(Top 56%)10741(Top 67%)10741(Top 1681%)
10K6.21 mi3.10 mi16515+31011023+10911023+10916234(Top 57%)10922(Top 68%)10922(Top 1709%)
15K9.32 mi3.11 mi16269+24610928+9510928+9515858(Top 56%)10741(Top 67%)10741(Top 1681%)
20K12.43 mi3.11 mi16273-410916+1210916+1216282(Top 57%)10864(Top 67%)10864(Top 1700%)
Half13.11 mi0.68 mi16304-3110924-810924-816990(Top 60%)11181(Top 69%)11181(Top 1750%)
25K15.53 mi2.42 mi16252+5210892+3210892+3215980(Top 56%)10638(Top 66%)10638(Top 1665%)
30K18.64 mi3.11 mi16820-56811060-16811060-16819230(Top 68%)11935(Top 74%)11935(Top 1868%)
20M20.00 mi1.36 mi16989-16911104-4411104-4419019(Top 67%)11699(Top 73%)11699(Top 1831%)
21M21.00 mi1.00 mi17251-26211181-7711181-7720339(Top 72%)12186(Top 76%)12186(Top 1907%)
35K21.75 mi0.75 mi17190+6111125+5611125+5616045(Top 56%)10197(Top 63%)10197(Top 1596%)
23M23.00 mi1.25 mi17248-5811117+811117+817910(Top 63%)10920(Top 68%)10920(Top 1709%)
24M24.00 mi1.00 mi17427-17911172-5511172-5520360(Top 72%)12035(Top 75%)12035(Top 1883%)
40K24.85 mi0.85 mi17445-1811152+2011152+2017728(Top 62%)10699(Top 66%)10699(Top 1674%)
25.2M25.20 mi0.35 mi17405+4011128+2411128+2414422(Top 51%)9151(Top 57%)9151(Top 1432%)
Finish26.22 mi1.02 mi17450-4511118+1011118+1018832(Top 66%)11281(Top 70%)11281(Top 1765%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

15858

Males

10741

M65-69

10741

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16234

Males

10922

M65-69

10922

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

15858

Males

10741

M65-69

10741

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16282

Males

10864

M65-69

10864

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16990

Males

11181

M65-69

11181

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15980

Males

10638

M65-69

10638

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19230

Males

11935

M65-69

11935

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

19019

Males

11699

M65-69

11699

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20339

Males

12186

M65-69

12186

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

16045

Males

10197

M65-69

10197

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17910

Males

10920

M65-69

10920

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20360

Males

12035

M65-69

12035

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17728

Males

10699

M65-69

10699

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14422

Males

9151

M65-69

9151

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18832

Males

11281

M65-69

11281

Passing Analysis

Category:
Athletes Passed
1839
Passed By
2464
Net Change
-625
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16825
5K → 10K477167+310#16825#16515
10K → 15K34599+246#16515#16269
15K → 20K212216-4#16269#16273
20K → Half2556-31#16273#16304
Half → 25K184132+52#16304#16252
25K → 30K96664-568#16252#16820
30K → 20M51220-169#16820#16989
20M → 21M57319-262#16989#17251
21M → 35K9130+61#17251#17190
35K → 23M94152-58#17190#17248
23M → 24M44223-179#17248#17427
24M → 40K6381-18#17427#17445
40K → 25.2M499+40#17445#17405
25.2M → Finish5196-45#17405#17450
TOTALS18392464-625
📊

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