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BOSTON MARATHON 2025

Yi Yan

BC

Bib: 31284 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:34/mi
29:44
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:42/mi
56:46
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:18/mi
1:22:34
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:23/mi
1:48:36
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:26/mi
1:54:21
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:36/mi
2:15:13
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:10/mi
2:43:43
↑ 181↓ 1480.2%
138 ft elev
20M
9:21/mi
2:56:25
↑ 64↓ 500.2%
148 ft elev
21M
10:04/mi
3:06:29
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:05/mi
3:13:17
↑ 17↓ 861.7%
156 ft elev
23M
9:38/mi
3:25:21
↑ 23↓ 630.6%
116 ft elev
24M
9:16/mi
3:34:37
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:46/mi
3:42:58
↓ 200.3%
20 ft elev
25.2M
10:15/mi
3:46:30
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:09/mi
3:55:49
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:21
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:01:28
Pace9:16 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:4329:449:3429:44
9:34
-
10K
6.21 mi12:21:4556:469:0827:02
8:42
-0:52
15K
9.32 mi12:47:331:22:348:5225:48
8:18
-0:24
20K
12.43 mi13:13:351:48:368:4426:02
8:23
+0:05
Half
13.11 mi13:19:201:54:218:435:45
8:26
+0:03
25K
15.53 mi13:40:122:15:138:4220:52
8:36
+0:10
30K
18.64 mi14:08:422:43:438:4728:30
9:10
+0:34
20M
20.00 mi14:21:242:56:258:4912:42
9:21
+0:11
21M
21.00 mi14:31:283:06:298:5310:04
10:04
+0:43
35K
21.75 mi14:38:163:13:178:536:48
9:05
-0:59
23M
23.00 mi14:50:203:25:218:5612:04
9:38
+0:33
24M
24.00 mi14:59:363:34:378:579:16
9:16
-0:22
40K
24.85 mi15:07:573:42:588:588:21
9:46
+0:30
25.2M
25.20 mi15:11:293:46:308:593:32
10:15
+0:29
Finish
26.22 mi15:20:483:55:499:009:19
9:09
-1:06

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

8:18 /mi

Average Pace

9:00 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:29

45% of race

Time at Steady Pace

1:06:35

28% of race

Time at Slower Pace

1:03:45

27% of race

Average Pace: 9:00 /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 mi11:54:4329:449:3429:44
9:34
#24467
10K
6.21 mi12:21:4556:469:0827:02
8:42
#22963
15K
9.32 mi12:47:331:22:348:5225:48
8:18
#21573
20K
12.43 mi13:13:351:48:368:4426:02
8:23
#20621
Half
13.11 mi13:19:201:54:218:435:45
8:26
#20539
25K
15.53 mi13:40:122:15:138:4220:52
8:36
#20082
30K
18.64 mi14:08:422:43:438:4728:30
9:10
#19769
20M
20.00 mi14:21:242:56:258:4912:42
9:21
#19671
21M
21.00 mi14:31:283:06:298:5310:04
10:04
#19601
35K
21.75 mi14:38:163:13:178:536:48
9:05
#19568
23M
23.00 mi14:50:203:25:218:5612:04
9:38
#19552
24M
24.00 mi14:59:363:34:378:579:16
9:16
#19523
40K
24.85 mi15:07:573:42:588:588:21
9:46
#19514
25.2M
25.20 mi15:11:293:46:308:593:32
10:15
#19490
Finish
26.22 mi15:20:483:55:499:009:19
9:09
#19521
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi244671445714457180811166511665
10K6.21 mi3.10 mi22963+150413768+68913768+689208651285712857
15K9.32 mi3.11 mi21573+139013167+60113167+601180811166511665
20K12.43 mi3.11 mi20621+95212735+43212735+432174281136411364
Half13.11 mi0.68 mi20539+8212704+3112704+31187231193211932
25K15.53 mi2.42 mi20082+45712493+21112493+211178341145511455
30K18.64 mi3.11 mi19769+31312324+16912324+169185131162311623
20M20.00 mi1.36 mi19671+9812259+6512259+65184941144811448
21M21.00 mi1.00 mi19601+7012199+6012199+60185521141511415
35K21.75 mi0.75 mi19568+3312168+3112168+31186481132611326
23M23.00 mi1.25 mi19552+1612130+3812130+38192211154611546
24M24.00 mi1.00 mi19523+2912094+3612094+36186521124211242
40K24.85 mi0.85 mi19514+912074+2012074+20196891165411654
25.2M25.20 mi0.35 mi19490+2412056+1812056+18180501085010850
Finish26.22 mi1.02 mi19521-3112046+1012046+10196901166611666

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18081

Males

11665

M50-54

11665

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20865

Males

12857

M50-54

12857

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18081

Males

11665

M50-54

11665

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17428

Males

11364

M50-54

11364

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18723

Males

11932

M50-54

11932

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17834

Males

11455

M50-54

11455

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18513

Males

11623

M50-54

11623

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18494

Males

11448

M50-54

11448

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18552

Males

11415

M50-54

11415

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18648

Males

11326

M50-54

11326

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

19221

Males

11546

M50-54

11546

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18652

Males

11242

M50-54

11242

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19689

Males

11654

M50-54

11654

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18050

Males

10850

M50-54

10850

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

19690

Males

11666

M50-54

11666

Passing Analysis

Category:
Athletes Passed
5475
Passed By
529
Net Change
+4946
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24467
5K → 10K15106+1504#24467#22963
10K → 15K13911+1390#22963#21573
15K → 20K9520+952#21573#20621
20K → Half9210+82#20621#20539
Half → 25K4669+457#20539#20082
25K → 30K38976+313#20082#19769
30K → 20M14345+98#19769#19671
20M → 21M13969+70#19671#19601
21M → 35K6532+33#19601#19568
35K → 23M9781+16#19568#19552
23M → 24M7546+29#19552#19523
24M → 40K6657+9#19523#19514
40K → 25.2M3814+24#19514#19490
25.2M → Finish5283-31#19490#19521
TOTALS5475529+4946

Passing Charts

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