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BOSTON MARATHON 2025

Chunyuan Yu

Bib: 17967•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 50%
Masters (Masters Women)
#0 / 6759
Top 38%
Division (F40-44)
#0 / 1718
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
8:09/mi
25:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:06/mi
50:30
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:15:30
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:41:50
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:47:33
↑ 19↓ 370.5%
25K· 15.53 mi
9:28/mi
2:10:29
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:39:02
↑ 181↓ 1480.2%
20M
9:00/mi
2:51:16
↑ 64↓ 500.2%
21M
9:54/mi
3:01:10
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
3:07:06
↑ 17↓ 861.7%
23M
8:25/mi
3:17:38
↑ 23↓ 630.6%
24M
8:26/mi
3:26:04
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:33:13
↓ 200.3%
25.2M
9:37/mi
3:36:32
↑ 13↓ 160.2%
Finish· 26.22 mi
8:05/mi
3:44:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:33
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:57:13
Pace8:56 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2425:208:0925:20
8:09
-
10K
6.21 mi11:40:3450:308:0825:10
8:06
-0:03
15K
9.32 mi12:05:341:15:308:0625:00
8:03
-0:03
20K
12.43 mi12:31:541:41:508:1226:20
8:29
+0:26
Half
13.11 mi12:37:371:47:338:125:43
8:23
-0:06
25K
15.53 mi13:00:332:10:298:2422:56
9:28
+1:05
30K
18.64 mi13:29:062:39:028:3228:33
9:11
-0:17
20M
20.00 mi13:41:202:51:168:3412:14
9:00
-0:11
21M
21.00 mi13:51:143:01:108:389:54
9:54
+0:54
35K
21.75 mi13:57:103:07:068:365:56
7:56
-1:58
23M
23.00 mi14:07:423:17:388:3610:32
8:25
+0:29
24M
24.00 mi14:16:083:26:048:358:26
8:26
+0:01
40K
24.85 mi14:23:173:33:138:357:09
8:22
-0:04
25.2M
25.20 mi14:26:363:36:328:363:19
9:37
+1:15
Finish
26.22 mi14:34:503:44:468:358:14
8:05
-1:32

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

7:56 /mi

Average Pace

8:35 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:20

29% of race

Time at Steady Pace

1:23:30

37% of race

Time at Slower Pace

1:16:56

34% of race

Average Pace: 8:34 /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 mi11:15:2425:208:0925:20
8:09
#17794
10K
6.21 mi11:40:3450:308:0825:10
8:06
#17470
15K
9.32 mi12:05:341:15:308:0625:00
8:03
#17088
20K
12.43 mi12:31:541:41:508:1226:20
8:29
#17313
Half
13.11 mi12:37:371:47:338:125:43
8:23
#17357
25K
15.53 mi13:00:332:10:298:2422:56
9:28
#18253
30K
18.64 mi13:29:062:39:028:3228:33
9:11
#18332
20M
20.00 mi13:41:202:51:168:3412:14
9:00
#18176
21M
21.00 mi13:51:143:01:108:389:54
9:54
#18171
35K
21.75 mi13:57:103:07:068:365:56
7:56
#17950
23M
23.00 mi14:07:423:17:388:3610:32
8:25
#17622
24M
24.00 mi14:16:083:26:048:358:26
8:26
#17452
40K
24.85 mi14:23:173:33:138:357:09
8:22
#17265
25.2M
25.20 mi14:26:363:36:328:363:19
9:37
#17234
Finish
26.22 mi14:34:503:44:468:358:14
8:05
#17071
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi177946215621516398(Top 58%)5379(Top 44%)5379(Top 313%)
10K6.21 mi3.10 mi17470+3246021+1946021+19417216(Top 61%)5833(Top 48%)5833(Top 340%)
15K9.32 mi3.11 mi17088+3825767+2545767+25416398(Top 58%)5379(Top 44%)5379(Top 313%)
20K12.43 mi3.11 mi17313-2255925-1585925-15818067(Top 64%)6377(Top 52%)6377(Top 371%)
Half13.11 mi0.68 mi17357-445957-325957-3218498(Top 65%)6612(Top 54%)6612(Top 385%)
25K15.53 mi2.42 mi18253-8966503-5466503-54621723(Top 76%)8496(Top 69%)8496(Top 495%)
30K18.64 mi3.11 mi18332-796572-696572-6918604(Top 65%)6892(Top 56%)6892(Top 401%)
20M20.00 mi1.36 mi18176+1566519+536519+5316814(Top 59%)6039(Top 49%)6039(Top 352%)
21M21.00 mi1.00 mi18171+56538-196538-1917908(Top 63%)6738(Top 55%)6738(Top 392%)
35K21.75 mi0.75 mi17950+2216415+1236415+12311851(Top 42%)3590(Top 29%)3590(Top 209%)
23M23.00 mi1.25 mi17622+3286290+1256290+12512811(Top 45%)4177(Top 34%)4177(Top 243%)
24M24.00 mi1.00 mi17452+1706219+716219+7114142(Top 50%)4908(Top 40%)4908(Top 286%)
40K24.85 mi0.85 mi17265+1876137+826137+8212602(Top 44%)4255(Top 35%)4255(Top 248%)
25.2M25.20 mi0.35 mi17234+316134+36134+315256(Top 54%)5697(Top 47%)5697(Top 332%)
Finish26.22 mi1.02 mi17071+1636057+776057+7713489(Top 47%)4697(Top 38%)4697(Top 273%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16398

Females

5379

F40-44

5379

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17216

Females

5833

F40-44

5833

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16398

Females

5379

F40-44

5379

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18067

Females

6377

F40-44

6377

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18498

Females

6612

F40-44

6612

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21723

Females

8496

F40-44

8496

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18604

Females

6892

F40-44

6892

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16814

Females

6039

F40-44

6039

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17908

Females

6738

F40-44

6738

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11851

Females

3590

F40-44

3590

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12811

Females

4177

F40-44

4177

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14142

Females

4908

F40-44

4908

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12602

Females

4255

F40-44

4255

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15256

Females

5697

F40-44

5697

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13489

Females

4697

F40-44

4697

Passing Analysis

Category:
Athletes Passed
2768
Passed By
2045
Net Change
+723
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17794
5K → 10K478154+324#17794#17470
10K → 15K44361+382#17470#17088
15K → 20K125350-225#17088#17313
20K → Half1761-44#17313#17357
Half → 25K33929-896#17357#18253
25K → 30K217296-79#18253#18332
30K → 20M20145+156#18332#18176
20M → 21M108103+5#18176#18171
21M → 35K2210+221#18171#17950
35K → 23M3335+328#17950#17622
23M → 24M18010+170#17622#17452
24M → 40K1936+187#17452#17265
40K → 25.2M5019+31#17265#17234
25.2M → Finish1696+163#17234#17071
TOTALS27682045+723
📊

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