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BOSTON MARATHON 2025

Song Yuan

Bib: 19143•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
8:49/mi
27:24
↑ 97↓ 3451.5%
10K· 6.21 mi
11:01/mi
1:01:38
↑ 79↓ 1380.4%
15K· 9.32 mi
11:54/mi
1:38:37
↑ 67↓ 78
20K· 12.43 mi
12:55/mi
2:18:46
↑ 106↓ 860.1%
Half· 13.11 mi
12:20/mi
2:27:11
↑ 19↓ 370.5%
25K· 15.53 mi
16:54/mi
3:08:10
↑ 66↓ 880.2%
30K· 18.64 mi
14:49/mi
3:54:12
↑ 181↓ 1480.2%
20M
15:07/mi
4:14:45
↑ 64↓ 500.2%
21M
16:10/mi
4:30:55
↑ 106↓ 241.6%
35K· 21.75 mi
15:14/mi
4:42:19
↑ 17↓ 861.7%
23M
15:02/mi
5:01:08
↑ 23↓ 630.6%
24M
14:34/mi
5:15:42
↓ 821.3%
40K· 24.85 mi
14:34/mi
5:28:09
↓ 200.3%
25.2M
14:04/mi
5:33:00
↑ 13↓ 160.2%
Finish· 26.22 mi
11:50/mi
5:45:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:11
Pace11:14 /mi
2nd Half
Distance13.11 mi
Time3:17:53
Pace15:06 /mi
📊Positive Split: 34.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3827:248:4927:24
8:49
-
10K
6.21 mi11:52:521:01:389:5534:14
11:01
+2:12
15K
9.32 mi12:29:511:38:3710:3536:59
11:54
+0:53
20K
12.43 mi13:10:002:18:4611:1040:09
12:55
+1:01
Half
13.11 mi13:18:252:27:1111:148:25
12:20
-0:35
25K
15.53 mi13:59:243:08:1012:0740:59
16:54
+4:34
30K
18.64 mi14:45:263:54:1212:3446:02
14:49
-2:05
20M
20.00 mi15:05:594:14:4512:4420:33
15:07
+0:18
21M
21.00 mi15:22:094:30:5512:5416:10
16:10
+1:03
35K
21.75 mi15:33:334:42:1912:5911:24
15:14
-0:56
23M
23.00 mi15:52:225:01:0813:0618:49
15:02
-0:12
24M
24.00 mi16:06:565:15:4213:0914:34
14:34
-0:28
40K
24.85 mi16:19:235:28:0913:1212:27
14:34
0:00
25.2M
25.20 mi16:24:145:33:0013:134:51
14:04
-0:30
Finish
26.22 mi16:36:185:45:0413:1012:04
11:50
-2:14

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

8:49 /mi

Average Pace

13:10 /mi

Slowest Pace

16:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:15

46% of race

Time at Steady Pace

2:08:40

37% of race

Time at Slower Pace

57:09

17% of race

Average Pace: 13:10 /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 mi11:18:3827:248:4927:24
8:49
#21609
10K
6.21 mi11:52:521:01:389:5534:14
11:01
#25236
15K
9.32 mi12:29:511:38:3710:3536:59
11:54
#26427
20K
12.43 mi13:10:002:18:4611:1040:09
12:55
#27016
Half
13.11 mi13:18:252:27:1111:148:25
12:20
#27055
25K
15.53 mi13:59:243:08:1012:0740:59
16:54
#27688
30K
18.64 mi14:45:263:54:1212:3446:02
14:49
#27777
20M
20.00 mi15:05:594:14:4512:4420:33
15:07
#27810
21M
21.00 mi15:22:094:30:5512:5416:10
16:10
#27827
35K
21.75 mi15:33:334:42:1912:5911:24
15:14
#27881
23M
23.00 mi15:52:225:01:0813:0618:49
15:02
#27899
24M
24.00 mi16:06:565:15:4213:0914:34
14:34
#27920
40K
24.85 mi16:19:235:28:0913:1212:27
14:34
#27931
25.2M
25.20 mi16:24:145:33:0013:134:51
14:04
#27912
Finish
26.22 mi16:36:185:45:0413:1012:04
11:50
#27878
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi21609131421314227564(Top 97%)15768(Top 98%)15768(Top 957%)
10K6.21 mi3.10 mi25236-362714815-167314815-167327084(Top 95%)15605(Top 97%)15605(Top 947%)
15K9.32 mi3.11 mi26427-119115348-53315348-53327564(Top 97%)15768(Top 98%)15768(Top 957%)
20K12.43 mi3.11 mi27016-58915572-22415572-22427785(Top 98%)15852(Top 98%)15852(Top 962%)
Half13.11 mi0.68 mi27055-3915581-915581-927685(Top 97%)15803(Top 98%)15803(Top 959%)
25K15.53 mi2.42 mi27688-63315824-24315824-24328375(Top 100%)16087(Top 100%)16087(Top 976%)
30K18.64 mi3.11 mi27777-8915854-3015854-3027956(Top 98%)15856(Top 98%)15856(Top 962%)
20M20.00 mi1.36 mi27810-3315862-815862-827928(Top 98%)15837(Top 98%)15837(Top 961%)
21M21.00 mi1.00 mi27827-1715860+215860+227882(Top 98%)15817(Top 98%)15817(Top 960%)
35K21.75 mi0.75 mi27881-5415880-2015880-2028120(Top 99%)15928(Top 99%)15928(Top 967%)
23M23.00 mi1.25 mi27899-1815883-315883-327926(Top 98%)15797(Top 98%)15797(Top 959%)
24M24.00 mi1.00 mi27920-21158831588327903(Top 98%)15766(Top 98%)15766(Top 957%)
40K24.85 mi0.85 mi27931-1115887-415887-427555(Top 97%)15591(Top 97%)15591(Top 946%)
25.2M25.20 mi0.35 mi27912+1915875+1215875+1226366(Top 93%)14936(Top 93%)14936(Top 906%)
Finish26.22 mi1.02 mi27878+3415855+2015855+2026615(Top 94%)15110(Top 94%)15110(Top 917%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

27564

Males

15768

M55-59

15768

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

27084

Males

15605

M55-59

15605

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

27564

Males

15768

M55-59

15768

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

27785

Males

15852

M55-59

15852

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

27685

Males

15803

M55-59

15803

Half→25K

13.1 - 15.5 mi

Top 100%
×4story building
+66ft-88ft

Overall

28375

Males

16087

M55-59

16087

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

27956

Males

15856

M55-59

15856

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

27928

Males

15837

M55-59

15837

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

27882

Males

15817

M55-59

15817

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28120

Males

15928

M55-59

15928

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27926

Males

15797

M55-59

15797

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

27903

Males

15766

M55-59

15766

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27555

Males

15591

M55-59

15591

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26366

Males

14936

M55-59

14936

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26615

Males

15110

M55-59

15110

Passing Analysis

Category:
Athletes Passed
176
Passed By
6445
Net Change
-6269
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21609
5K → 10K23629-3627#21609#25236
10K → 15K51196-1191#25236#26427
15K → 20K13602-589#26427#27016
20K → Half746-39#27016#27055
Half → 25K4637-633#27055#27688
25K → 30K22111-89#27688#27777
30K → 20M2154-33#27777#27810
20M → 21M1330-17#27810#27827
21M → 35K458-54#27827#27881
35K → 23M826-18#27881#27899
23M → 24M1132-21#27899#27920
24M → 40K1223-11#27920#27931
40K → 25.2M190+19#27931#27912
25.2M → Finish351+34#27912#27878
TOTALS1766445-6269
📊

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