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BOSTON MARATHON 2025

Biling Ye

Bib: 21648•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Masters (Masters Women)
#0 / 6759
Top 38%
Division (F45-49)
#0 / 1813
Top 48%
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
7:47/mi
24:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
48:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:07/mi
1:13:48
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:39:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:45:44
↑ 19↓ 370.5%
25K· 15.53 mi
10:03/mi
2:10:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:37:47
↑ 181↓ 1480.2%
20M
9:15/mi
2:50:21
↑ 64↓ 500.2%
21M
9:42/mi
3:00:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
3:06:24
↑ 17↓ 861.7%
23M
8:38/mi
3:17:12
↑ 23↓ 630.6%
24M
8:21/mi
3:25:33
↓ 821.3%
40K· 24.85 mi
8:43/mi
3:33:00
↓ 200.3%
25.2M
9:34/mi
3:36:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:12/mi
3:44:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:44
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:58:55
Pace9:04 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4624:117:4724:11
7:47
-
10K
6.21 mi11:45:1048:357:4924:24
7:51
+0:04
15K
9.32 mi12:10:231:13:487:5525:13
8:07
+0:16
20K
12.43 mi12:36:341:39:598:0326:11
8:26
+0:19
Half
13.11 mi12:42:191:45:448:045:45
8:26
0:00
25K
15.53 mi13:06:412:10:068:2324:22
10:03
+1:37
30K
18.64 mi13:34:222:37:478:2827:41
8:55
-1:08
20M
20.00 mi13:46:562:50:218:3112:34
9:15
+0:20
21M
21.00 mi13:56:383:00:038:349:42
9:42
+0:27
35K
21.75 mi14:02:593:06:248:346:21
8:29
-1:13
23M
23.00 mi14:13:473:17:128:3410:48
8:38
+0:09
24M
24.00 mi14:22:083:25:338:348:21
8:21
-0:17
40K
24.85 mi14:29:353:33:008:347:27
8:43
+0:22
25.2M
25.20 mi14:32:533:36:188:353:18
9:34
+0:51
Finish
26.22 mi14:41:143:44:398:348:21
8:12
-1:22

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

7:47 /mi

Average Pace

8:34 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:13:48

33% of race

Time at Steady Pace

1:13:14

33% of race

Time at Slower Pace

1:17:37

35% 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 mi11:20:4624:117:4724:11
7:47
#14686
10K
6.21 mi11:45:1048:357:4924:24
7:51
#14942
15K
9.32 mi12:10:231:13:487:5525:13
8:07
#15664
20K
12.43 mi12:36:341:39:598:0326:11
8:26
#16289
Half
13.11 mi12:42:191:45:448:045:45
8:26
#16429
25K
15.53 mi13:06:412:10:068:2324:22
10:03
#18098
30K
18.64 mi13:34:222:37:478:2827:41
8:55
#17876
20M
20.00 mi13:46:562:50:218:3112:34
9:15
#17894
21M
21.00 mi13:56:383:00:038:349:42
9:42
#17847
35K
21.75 mi14:02:593:06:248:346:21
8:29
#17736
23M
23.00 mi14:13:473:17:128:3410:48
8:38
#17503
24M
24.00 mi14:22:083:25:338:348:21
8:21
#17315
40K
24.85 mi14:29:353:33:008:347:27
8:43
#17209
25.2M
25.20 mi14:32:533:36:188:353:18
9:34
#17166
Finish
26.22 mi14:41:143:44:398:348:21
8:12
#17046
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi146864342434216869(Top 59%)5654(Top 46%)5654(Top 312%)
10K6.21 mi3.10 mi14942-2564518-1764518-17615319(Top 54%)4739(Top 39%)4739(Top 261%)
15K9.32 mi3.11 mi15664-7224935-4174935-41716869(Top 59%)5654(Top 46%)5654(Top 312%)
20K12.43 mi3.11 mi16289-6255321-3865321-38617726(Top 62%)6180(Top 51%)6180(Top 341%)
Half13.11 mi0.68 mi16429-1405392-715392-7118754(Top 66%)6748(Top 55%)6748(Top 372%)
25K15.53 mi2.42 mi18098-16696414-10226414-102223382(Top 82%)9411(Top 77%)9411(Top 519%)
30K18.64 mi3.11 mi17876+2226332+826332+8217217(Top 61%)6143(Top 50%)6143(Top 339%)
20M20.00 mi1.36 mi17894-186363-316363-3118040(Top 64%)6735(Top 55%)6735(Top 371%)
21M21.00 mi1.00 mi17847+476346+176346+1717052(Top 60%)6286(Top 51%)6286(Top 347%)
35K21.75 mi0.75 mi17736+1116303+436303+4315440(Top 54%)5496(Top 45%)5496(Top 303%)
23M23.00 mi1.25 mi17503+2336225+786225+7814134(Top 50%)4878(Top 40%)4878(Top 269%)
24M24.00 mi1.00 mi17315+1886147+786147+7813608(Top 48%)4631(Top 38%)4631(Top 255%)
40K24.85 mi0.85 mi17209+1066110+376110+3714731(Top 52%)5385(Top 44%)5385(Top 297%)
25.2M25.20 mi0.35 mi17166+436092+186092+1815023(Top 53%)5570(Top 46%)5570(Top 307%)
Finish26.22 mi1.02 mi17046+1206047+456047+4514264(Top 50%)5088(Top 42%)5088(Top 281%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16869

Females

5654

F45-49

5654

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15319

Females

4739

F45-49

4739

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16869

Females

5654

F45-49

5654

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17726

Females

6180

F45-49

6180

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18754

Females

6748

F45-49

6748

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23382

Females

9411

F45-49

9411

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17217

Females

6143

F45-49

6143

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18040

Females

6735

F45-49

6735

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

17052

Females

6286

F45-49

6286

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15440

Females

5496

F45-49

5496

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14134

Females

4878

F45-49

4878

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13608

Females

4631

F45-49

4631

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14731

Females

5385

F45-49

5385

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

15023

Females

5570

F45-49

5570

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

14264

Females

5088

F45-49

5088

Passing Analysis

Category:
Athletes Passed
1810
Passed By
4170
Net Change
-2360
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14686
5K → 10K188444-256#14686#14942
10K → 15K58780-722#14942#15664
15K → 20K75700-625#15664#16289
20K → Half4144-140#16289#16429
Half → 25K111680-1669#16429#18098
25K → 30K344122+222#18098#17876
30K → 20M111129-18#17876#17894
20M → 21M12174+47#17894#17847
21M → 35K12716+111#17847#17736
35K → 23M25320+233#17736#17503
23M → 24M1979+188#17503#17315
24M → 40K12317+106#17315#17209
40K → 25.2M5916+43#17209#17166
25.2M → Finish13919+120#17166#17046
TOTALS18104170-2360
📊

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