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BOSTON MARATHON 2025

Yuan Chun Liu

Bib: 13497•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
7:14/mi
22:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
45:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:08:19
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:31:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:36:56
↑ 19↓ 370.5%
25K· 15.53 mi
7:41/mi
1:55:34
↑ 66↓ 880.2%
30K· 18.64 mi
8:17/mi
2:21:18
↑ 181↓ 1480.2%
20M
8:20/mi
2:32:38
↑ 64↓ 500.2%
21M
9:11/mi
2:41:49
↑ 106↓ 241.6%
35K· 21.75 mi
9:47/mi
2:49:08
↑ 17↓ 861.7%
23M
9:05/mi
3:00:31
↑ 23↓ 630.6%
24M
8:42/mi
3:09:13
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:16:47
↓ 200.3%
25.2M
17:15/mi
3:22:44
↑ 13↓ 160.2%
Finish· 26.22 mi
9:20/mi
3:32:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:56
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:55:19
Pace8:48 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4622:277:1422:27
7:14
-
10K
6.21 mi11:14:2145:027:1522:35
7:16
+0:02
15K
9.32 mi11:37:381:08:197:2023:17
7:30
+0:14
20K
12.43 mi12:01:121:31:537:2423:34
7:35
+0:05
Half
13.11 mi12:06:151:36:567:245:03
7:24
-0:11
25K
15.53 mi12:24:531:55:347:2618:38
7:41
+0:17
30K
18.64 mi12:50:372:21:187:3525:44
8:17
+0:36
20M
20.00 mi13:01:572:32:387:3811:20
8:20
+0:03
21M
21.00 mi13:11:082:41:497:429:11
9:11
+0:51
35K
21.75 mi13:18:272:49:087:477:19
9:47
+0:36
23M
23.00 mi13:29:503:00:317:5111:23
9:05
-0:42
24M
24.00 mi13:38:323:09:137:538:42
8:42
-0:23
40K
24.85 mi13:46:063:16:477:557:34
8:51
+0:09
25.2M
25.20 mi13:52:033:22:448:035:57
17:15
+8:24
Finish
26.22 mi14:01:343:32:158:069:31
9:20
-7:55

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

7:14 /mi

Average Pace

8:06 /mi

Slowest Pace

17:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:18:59

94% of race

Time at Slower Pace

13:16

6% of race

Average Pace: 8:06 /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 mi10:51:4622:277:1422:27
7:14
#9683
10K
6.21 mi11:14:2145:027:1522:35
7:16
#9858
15K
9.32 mi11:37:381:08:197:2023:17
7:30
#10470
20K
12.43 mi12:01:121:31:537:2423:34
7:35
#10702
Half
13.11 mi12:06:151:36:567:245:03
7:24
#10704
25K
15.53 mi12:24:531:55:347:2618:38
7:41
#10801
30K
18.64 mi12:50:372:21:187:3525:44
8:17
#11280
20M
20.00 mi13:01:572:32:387:3811:20
8:20
#11342
21M
21.00 mi13:11:082:41:497:429:11
9:11
#11514
35K
21.75 mi13:18:272:49:087:477:19
9:47
#12047
23M
23.00 mi13:29:503:00:317:5111:23
9:05
#12339
24M
24.00 mi13:38:323:09:137:538:42
8:42
#12512
40K
24.85 mi13:46:063:16:477:557:34
8:51
#12641
25.2M
25.20 mi13:52:033:22:448:035:57
17:15
#13455
Finish
26.22 mi14:01:343:32:158:069:31
9:20
#13819
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi96838000800011715(Top 41%)8940(Top 56%)8940(Top 448%)
10K6.21 mi3.10 mi9858-1758099-998099-9910090(Top 36%)8200(Top 51%)8200(Top 411%)
15K9.32 mi3.11 mi10470-6128384-2858384-28511715(Top 41%)8940(Top 56%)8940(Top 448%)
20K12.43 mi3.11 mi10702-2328478-948478-9411469(Top 40%)8720(Top 54%)8720(Top 437%)
Half13.11 mi0.68 mi10704-28477+18477+110889(Top 38%)8514(Top 53%)8514(Top 427%)
25K15.53 mi2.42 mi10801-978489-128489-1211425(Top 40%)8591(Top 53%)8591(Top 430%)
30K18.64 mi3.11 mi11280-4798639-1508639-15013371(Top 47%)9298(Top 58%)9298(Top 466%)
20M20.00 mi1.36 mi11342-628623+168623+1612745(Top 45%)8887(Top 55%)8887(Top 445%)
21M21.00 mi1.00 mi11514-1728666-438666-4314509(Top 51%)9569(Top 59%)9569(Top 479%)
35K21.75 mi0.75 mi12047-5338896-2308896-23021244(Top 75%)12542(Top 78%)12542(Top 628%)
23M23.00 mi1.25 mi12339-2928992-968992-9616750(Top 59%)10399(Top 65%)10399(Top 521%)
24M24.00 mi1.00 mi12512-1739055-639055-6315719(Top 55%)9915(Top 62%)9915(Top 497%)
40K24.85 mi0.85 mi12641-1299083-289083-2815437(Top 54%)9624(Top 60%)9624(Top 482%)
25.2M25.20 mi0.35 mi13455-8149431-3489431-34828106(Top 99%)15888(Top 99%)15888(Top 796%)
Finish26.22 mi1.02 mi13819-3649558-1279558-12720515(Top 72%)12056(Top 75%)12056(Top 604%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11715

Males

8940

M50-54

8940

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

10090

Males

8200

M50-54

8200

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11715

Males

8940

M50-54

8940

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11469

Males

8720

M50-54

8720

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10889

Males

8514

M50-54

8514

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11425

Males

8591

M50-54

8591

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13371

Males

9298

M50-54

9298

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12745

Males

8887

M50-54

8887

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14509

Males

9569

M50-54

9569

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21244

Males

12542

M50-54

12542

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16750

Males

10399

M50-54

10399

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15719

Males

9915

M50-54

9915

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15437

Males

9624

M50-54

9624

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28106

Males

15888

M50-54

15888

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20515

Males

12056

M50-54

12056

Passing Analysis

Category:
Athletes Passed
893
Passed By
5025
Net Change
-4136
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9683
5K → 10K153327-175#9683#9858
10K → 15K53663-612#9858#10470
15K → 20K101332-232#10470#10702
20K → Half3739-2#10702#10704
Half → 25K135232-97#10704#10801
25K → 30K117596-479#10801#11280
30K → 20M99161-62#11280#11342
20M → 21M50222-172#11342#11514
21M → 35K7540-533#11514#12047
35K → 23M49341-292#12047#12339
23M → 24M34207-173#12339#12512
24M → 40K44173-129#12512#12641
40K → 25.2M0814-814#12641#13455
25.2M → Finish14378-364#13455#13819
TOTALS8935025-4136
📊

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