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BOSTON MARATHON 2025

Fei Yang

Bib: 18999 F CN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 31%
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
7:19/mi
22:45
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:11/mi
45:05
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:15/mi
1:07:36
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:28/mi
1:30:48
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:15/mi
1:35:45
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:41/mi
1:54:23
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:11/mi
2:19:48
↑ 181↓ 1480.2%
138 ft elev
20M
8:11/mi
2:30:55
↑ 64↓ 500.2%
148 ft elev
21M
8:49/mi
2:39:44
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:48/mi
2:45:34
↑ 17↓ 861.7%
156 ft elev
23M
7:47/mi
2:55:19
↑ 23↓ 630.6%
116 ft elev
24M
7:14/mi
3:02:33
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:20/mi
3:08:49
↓ 200.3%
20 ft elev
25.2M
8:22/mi
3:11:42
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:21/mi
3:19:11
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:35:457:18 /mi⚡ faster
2nd Half
1:43:267:53 /mi+8.0%
Positive split — 8.0% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
22:457:193.11 mi22:45
7:19
-
10K
45:057:153.10 mi22:20
7:11
-0:08
15K
1:07:367:153.11 mi22:31
7:15
+0:04
20K
1:30:487:183.11 mi23:12
7:28
+0:13
Half(13.11 mi)
1:35:457:180.68 mi4:57
7:15
-0:13
25K
1:54:237:222.42 mi18:38
7:41
+0:26
30K
2:19:487:303.11 mi25:25
8:11
+0:30
20M
2:30:557:331.36 mi11:07
8:11
0:00
21M
2:39:447:361.00 mi8:49
8:49
+0:38
35K
2:45:347:370.75 mi5:50
7:48
-1:01
23M
2:55:197:371.25 mi9:45
7:47
-0:01
24M
3:02:337:361.00 mi7:14
7:14
-0:33
40K
3:08:497:360.85 mi6:16
7:20
+0:06
25.2M
3:11:427:360.35 mi2:53
8:22
+1:02
Finish(26.22 mi)
3:19:117:361.02 mi7:29
7:21
-1:01
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:11 /mi

Average Pace

7:36 /mi

Slowest Pace

8:49 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

22:20

11% of race

Time at Steady Pace

1:53:02

57% of race

Time at Slower Pace

1:03:49

32% of race

Average Pace: 7:36 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi1059720872087954716751675
10K3.10 mi9949+6481782+3051782+305940715601560
15K3.11 mi9783+1661736+461736+46954716751675
20K3.11 mi9939-1561831-951831-951049822092209
Half(13.11 mi)0.68 mi9917+221828+31828+3968718151815
25K2.42 mi10124-2071969-1411969-1411143228052805
30K3.11 mi10588-4642250-2812250-2811268636543654
20M1.36 mi10655-672329-792329-791168732853285
21M1.00 mi10727-722406-772406-771240637993799
35K0.75 mi10704+232411-52411-51082030033003
23M1.25 mi10529+1752366+452366+45852220532053
24M1.00 mi10281+2482276+902276+90606711021102
40K0.85 mi10044+2372193+832193+83585910911091
25.2M0.35 mi9989+552181+122181+12803120892089
Finish(26.22 mi)1.02 mi9890+992165+162165+16810821162116

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9547

Females

1675

F18-39

1675

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9407

Females

1560

F18-39

1560

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9547

Females

1675

F18-39

1675

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10498

Females

2209

F18-39

2209

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9687

Females

1815

F18-39

1815

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11432

Females

2805

F18-39

2805

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12686

Females

3654

F18-39

3654

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

11687

Females

3285

F18-39

3285

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12406

Females

3799

F18-39

3799

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10820

Females

3003

F18-39

3003

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8522

Females

2053

F18-39

2053

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

6067

Females

1102

F18-39

1102

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5859

Females

1091

F18-39

1091

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

8031

Females

2089

F18-39

2089

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8108

Females

2116

F18-39

2116

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 5K-#10597
5K → 10K
64712*+648
#10597 → #9949
10K → 15K
88254+166
#9949 → #9783
15K → 20K
294139-156
#9783 → #9939
20K → Half
1638+22
#9939 → #9917
Half → 25K
30398-207
#9917 → #10124
25K → 30K
581118-464
#10124 → #10588
30K → 20M
16093-67
#10588 → #10655
20M → 21M
15078-72
#10655 → #10727
21M → 35K
4467+23
#10727 → #10704
35K → 23M
26201+175
#10704 → #10529
23M → 24M
10258+248
#10529 → #10281
24M → 40K
2239+237
#10281 → #10044
40K → 25.2M
1166*+55
#10044 → #9989
25.2M → Finish
21120+99
#9989 → #9890
TOTALS
17702481*+707
#10597 → #9890

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Visualized

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