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BOSTON MARATHON 2025

Mengqi Ju

Bib: 2273•F

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

Start
0:00:00
Race begins
5K· 3.11 mi
35:30
Rank: #27960
Start → 5K
35:30 | 11:26/mi
10K· 6.21 mi
1:21:44
Rank: #28372 (-412)
5K → 10K
46:14 | 14:53/mi
15K· 9.32 mi
2:03:45
Rank: #28365 (+7)
10K → 15K
42:01 | 13:31/mi
20K· 12.43 mi
3:12:27
Rank: #28403 (-38)
15K → 20K
1:08:42 | 22:07/mi
Half· 13.11 mi
3:21:09
Rank: #28403
20K → Half
8:42 | 12:45/mi
25K· 15.53 mi
4:10:40
Rank: #28404 (-1)
Half → 25K
49:31 | 20:25/mi
30K· 18.64 mi
4:56:23
Rank: #28404
25K → 30K
45:43 | 14:43/mi
20M
5:18:23
Rank: #28404
30K → 20M
22:00 | 16:11/mi
21M
5:34:29
Rank: #28402 (+2)
20M → 21M
16:06 | 16:06/mi
35K· 21.75 mi
5:45:03
Rank: #28402
21M → 35K
10:34 | 14:07/mi
23M
6:04:09
Rank: #28402
35K → 23M
19:06 | 15:15/mi
24M
6:18:54
Rank: #28402
23M → 24M
14:45 | 14:45/mi
40K· 24.85 mi
6:32:29
Rank: #28402
24M → 40K
13:35 | 15:53/mi
25.2M
6:38:34
Rank: #28402
40K → 25.2M
6:05 | 17:38/mi
Finish· 26.22 mi
6:54:37
Rank: #28401 (+1)
25.2M → Finish
16:03 | 15:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time3:21:09
Pace15:21 /mi
2nd Half
Distance13.11 mi
Time3:33:28
Pace16:17 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:36:0735:3011:2635:30
11:26
-
10K
6.21 mi11:22:211:21:4413:0946:14
14:53
+3:27
15K
9.32 mi12:04:222:03:4513:1742:01
13:31
-1:22
20K
12.43 mi13:13:043:12:2715:291:08:42
22:07
+8:36
Half
13.11 mi13:21:463:21:0915:218:42
12:45
-9:22
25K
15.53 mi14:11:174:10:4016:0849:31
20:25
+7:40
30K
18.64 mi14:57:004:56:2315:5445:43
14:43
-5:42
20M
20.00 mi15:19:005:18:2315:5522:00
16:11
+1:28
21M
21.00 mi15:35:065:34:2915:5616:06
16:06
-0:05
35K
21.75 mi15:45:405:45:0315:5210:34
14:07
-1:59
23M
23.00 mi16:04:466:04:0915:5019:06
15:15
+1:08
24M
24.00 mi16:19:316:18:5415:4714:45
14:45
-0:30
40K
24.85 mi16:33:066:32:2915:4713:35
15:53
+1:08
25.2M
25.20 mi16:39:116:38:3415:496:05
17:38
+1:45
Finish
26.22 mi16:55:146:54:3715:5016:03
15:45
-1:53

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

11:26 /mi

Average Pace

15:50 /mi

Slowest Pace

22:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:13

21% of race

Time at Steady Pace

3:24:06

49% of race

Time at Slower Pace

2:04:18

30% of race

Average Pace: 15:49 /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 mi10:36:0735:3011:2635:30
11:26
#27960
10K
6.21 mi11:22:211:21:4413:0946:14
14:53
#28372
15K
9.32 mi12:04:222:03:4513:1742:01
13:31
#28365
20K
12.43 mi13:13:043:12:2715:291:08:42
22:07
#28403
Half
13.11 mi13:21:463:21:0915:218:42
12:45
#28403
25K
15.53 mi14:11:174:10:4016:0849:31
20:25
#28404
30K
18.64 mi14:57:004:56:2315:5445:43
14:43
#28404
20M
20.00 mi15:19:005:18:2315:5522:00
16:11
#28404
21M
21.00 mi15:35:065:34:2915:5616:06
16:06
#28402
35K
21.75 mi15:45:405:45:0315:5210:34
14:07
#28402
23M
23.00 mi16:04:466:04:0915:5019:06
15:15
#28402
24M
24.00 mi16:19:316:18:5415:4714:45
14:45
#28402
40K
24.85 mi16:33:066:32:2915:4713:35
15:53
#28402
25.2M
25.20 mi16:39:116:38:3415:496:05
17:38
#28402
Finish
26.22 mi16:55:146:54:3715:5016:03
15:45
#28401
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27960119371193728307(Top 100%)12176(Top 100%)12176(Top 223%)
10K6.21 mi3.10 mi28372-41212211-27412211-27428398(Top 100%)12224(Top 100%)12224(Top 224%)
15K9.32 mi3.11 mi28365+712206+512206+528307(Top 100%)12176(Top 100%)12176(Top 223%)
20K12.43 mi3.11 mi28403-3812228-2212228-2228403(Top 100%)12228(Top 100%)12228(Top 224%)
Half13.11 mi0.68 mi28403122281222827886(Top 98%)11936(Top 98%)11936(Top 218%)
25K15.53 mi2.42 mi28404-1122281222828399(Top 100%)12225(Top 100%)12225(Top 224%)
30K18.64 mi3.11 mi28404122281222827904(Top 98%)12001(Top 98%)12001(Top 219%)
20M20.00 mi1.36 mi28404122281222828206(Top 99%)12153(Top 99%)12153(Top 222%)
21M21.00 mi1.00 mi28402+212227+112227+127857(Top 98%)11986(Top 98%)11986(Top 219%)
35K21.75 mi0.75 mi28402122271222727746(Top 98%)11983(Top 98%)11983(Top 219%)
23M23.00 mi1.25 mi28402122271222728005(Top 99%)12093(Top 99%)12093(Top 221%)
24M24.00 mi1.00 mi28402122271222727977(Top 98%)12093(Top 99%)12093(Top 221%)
40K24.85 mi0.85 mi28402122271222728073(Top 99%)12126(Top 99%)12126(Top 222%)
25.2M25.20 mi0.35 mi28402122271222728167(Top 99%)12167(Top 100%)12167(Top 222%)
Finish26.22 mi1.02 mi28401+1122271222728301(Top 100%)12194(Top 100%)12194(Top 223%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 100%
×21stories
+97ft-345ft

Overall

28307

Females

12176

F18-39

12176

5K→10K

3.1 - 6.2 mi

Top 100%
×5stories
+79ft-138ft

Overall

28398

Females

12224

F18-39

12224

10K→15K

6.2 - 9.3 mi

Top 100%
×3stories
+67ft-78ft

Overall

28307

Females

12176

F18-39

12176

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

28403

Females

12228

F18-39

12228

20K→Half

12.4 - 13.1 mi

Top 98%
×2stories
+19ft-37ft

Overall

27886

Females

11936

F18-39

11936

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

28399

Females

12225

F18-39

12225

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

27904

Females

12001

F18-39

12001

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

28206

Females

12153

F18-39

12153

20M→21M

20.0 - 21.0 mi

Top 98%
×8stories
+106ft-24ft

Overall

27857

Females

11986

F18-39

11986

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

27746

Females

11983

F18-39

11983

35K→23M

21.8 - 23.0 mi

Top 99%
×5stories
+23ft-63ft

Overall

28005

Females

12093

F18-39

12093

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

27977

Females

12093

F18-39

12093

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

28073

Females

12126

F18-39

12126

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28167

Females

12167

F18-39

12167

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2stories
+22ft-21ft

Overall

28301

Females

12194

F18-39

12194

Passing Analysis

Category:
Athletes Passed
14
Passed By
455
Net Change
-441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27960
5K → 10K2414-412#27960#28372
10K → 15K92+7#28372#28365
15K → 20K038-38#28365#28403
20K → Half000#28403#28403
Half → 25K01-1#28403#28404
25K → 30K000#28404#28404
30K → 20M000#28404#28404
20M → 21M20+2#28404#28402
21M → 35K000#28402#28402
35K → 23M000#28402#28402
23M → 24M000#28402#28402
24M → 40K000#28402#28402
40K → 25.2M000#28402#28402
25.2M → Finish10+1#28402#28401
TOTALS14455-441
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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