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BOSTON MARATHON 2025

Kensi Ying

Bib: 17888•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
8:00/mi
24:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
49:27
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:14:03
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:39:13
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:44:43
↑ 19↓ 370.5%
25K· 15.53 mi
8:18/mi
2:04:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:58/mi
2:32:44
↑ 181↓ 1480.2%
20M
9:28/mi
2:45:36
↑ 64↓ 500.2%
21M
10:00/mi
2:55:36
↑ 106↓ 241.6%
35K· 21.75 mi
9:40/mi
3:02:50
↑ 17↓ 861.7%
23M
10:21/mi
3:15:47
↑ 23↓ 630.6%
24M
10:40/mi
3:26:27
↓ 821.3%
40K· 24.85 mi
10:58/mi
3:35:50
↓ 200.3%
25.2M
10:35/mi
3:39:29
↑ 13↓ 160.2%
Finish· 26.22 mi
9:21/mi
3:49:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:43
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time2:04:18
Pace9:29 /mi
📊Positive Split: 18.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2124:508:0024:50
8:00
-
10K
6.21 mi11:39:5849:277:5724:37
7:55
-0:05
15K
9.32 mi12:04:341:14:037:5724:36
7:55
0:00
20K
12.43 mi12:29:441:39:137:5925:10
8:06
+0:11
Half
13.11 mi12:35:141:44:437:595:30
8:04
-0:02
25K
15.53 mi12:55:222:04:518:0220:08
8:18
+0:14
30K
18.64 mi13:23:152:32:448:1227:53
8:58
+0:40
20M
20.00 mi13:36:072:45:368:1712:52
9:28
+0:30
21M
21.00 mi13:46:072:55:368:2210:00
10:00
+0:32
35K
21.75 mi13:53:213:02:508:247:14
9:40
-0:20
23M
23.00 mi14:06:183:15:478:3112:57
10:21
+0:41
24M
24.00 mi14:16:583:26:278:3610:40
10:40
+0:19
40K
24.85 mi14:26:213:35:508:419:23
10:58
+0:18
25.2M
25.20 mi14:30:003:39:298:433:39
10:35
-0:23
Finish
26.22 mi14:39:323:49:018:449:32
9:21
-1:14

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

7:55 /mi

Average Pace

8:44 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:51

55% of race

Time at Steady Pace

57:31

25% of race

Time at Slower Pace

46:39

20% of race

Average Pace: 8:44 /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 mi11:15:2124:508:0024:50
8:00
#16550
10K
6.21 mi11:39:5849:277:5724:37
7:55
#16169
15K
9.32 mi12:04:341:14:037:5724:36
7:55
#15882
20K
12.43 mi12:29:441:39:137:5925:10
8:06
#15810
Half
13.11 mi12:35:141:44:437:595:30
8:04
#15841
25K
15.53 mi12:55:222:04:518:0220:08
8:18
#15868
30K
18.64 mi13:23:152:32:448:1227:53
8:58
#16176
20M
20.00 mi13:36:072:45:368:1712:52
9:28
#16366
21M
21.00 mi13:46:072:55:368:2210:00
10:00
#16473
35K
21.75 mi13:53:213:02:508:247:14
9:40
#16668
23M
23.00 mi14:06:183:15:478:3112:57
10:21
#17096
24M
24.00 mi14:16:583:26:278:3610:40
10:40
#17553
40K
24.85 mi14:26:213:35:508:419:23
10:58
#17917
25.2M
25.20 mi14:30:003:39:298:433:39
10:35
#17947
Finish
26.22 mi14:39:323:49:018:449:32
9:21
#18088
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi165505486548615395(Top 54%)4811(Top 39%)4811(Top 88%)
10K6.21 mi3.10 mi16169+3815248+2385248+23815871(Top 56%)5055(Top 41%)5055(Top 92%)
15K9.32 mi3.11 mi15882+2875070+1785070+17815395(Top 54%)4811(Top 39%)4811(Top 88%)
20K12.43 mi3.11 mi15810+725047+235047+2315664(Top 55%)5019(Top 41%)5019(Top 92%)
Half13.11 mi0.68 mi15841-315056-95056-916454(Top 58%)5459(Top 45%)5459(Top 100%)
25K15.53 mi2.42 mi15868-275093-375093-3715965(Top 56%)5297(Top 43%)5297(Top 97%)
30K18.64 mi3.11 mi16176-3085327-2345327-23417563(Top 62%)6343(Top 52%)6343(Top 116%)
20M20.00 mi1.36 mi16366-1905473-1465473-14619042(Top 67%)7278(Top 60%)7278(Top 133%)
21M21.00 mi1.00 mi16473-1075571-985571-9818297(Top 64%)6944(Top 57%)6944(Top 127%)
35K21.75 mi0.75 mi16668-1955703-1325703-13220907(Top 74%)8450(Top 69%)8450(Top 155%)
23M23.00 mi1.25 mi17096-4285994-2915994-29121555(Top 76%)8845(Top 72%)8845(Top 162%)
24M24.00 mi1.00 mi17553-4576282-2886282-28823242(Top 82%)9753(Top 80%)9753(Top 178%)
40K24.85 mi0.85 mi17917-3646502-2206502-22023090(Top 81%)9744(Top 80%)9744(Top 178%)
25.2M25.20 mi0.35 mi17947-306527-256527-2519320(Top 68%)7808(Top 64%)7808(Top 143%)
Finish26.22 mi1.02 mi18088-1416616-896616-8920619(Top 73%)8451(Top 69%)8451(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15395

Females

4811

F18-39

4811

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15871

Females

5055

F18-39

5055

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15395

Females

4811

F18-39

4811

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15664

Females

5019

F18-39

5019

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16454

Females

5459

F18-39

5459

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15965

Females

5297

F18-39

5297

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17563

Females

6343

F18-39

6343

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

19042

Females

7278

F18-39

7278

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18297

Females

6944

F18-39

6944

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

20907

Females

8450

F18-39

8450

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21555

Females

8845

F18-39

8845

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23242

Females

9753

F18-39

9753

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23090

Females

9744

F18-39

9744

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19320

Females

7808

F18-39

7808

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20619

Females

8451

F18-39

8451

Passing Analysis

Category:
Athletes Passed
1725
Passed By
3263
Net Change
-1538
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16550
5K → 10K515134+381#16550#16169
10K → 15K37285+287#16169#15882
15K → 20K232160+72#15882#15810
20K → Half2253-31#15810#15841
Half → 25K169196-27#15841#15868
25K → 30K139447-308#15868#16176
30K → 20M62252-190#16176#16366
20M → 21M78185-107#16366#16473
21M → 35K26221-195#16473#16668
35K → 23M35463-428#16668#17096
23M → 24M22479-457#17096#17553
24M → 40K7371-364#17553#17917
40K → 25.2M1646-30#17917#17947
25.2M → Finish30171-141#17947#18088
TOTALS17253263-1538
📊

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