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BOSTON MARATHON 2025

Katherine Prevost

Bib: 8502•F

TN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 16%
Gender (Female)
#0 / 12228
Top 3%
Division (F18-39)
#0 / 5469
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:21
Rank: #6866
Start → 5K
6:52/mi
21:21 split
10K· 6.21 mi
42:25
Rank: #6550 (+316)
5K → 10K
6:47/mi
21:04 split
15K· 9.32 mi
1:03:11
Rank: #5997 (+553)
10K → 15K
6:41/mi
20:46 split
20K· 12.43 mi
1:24:04
Rank: #5623 (+374)
15K → 20K
6:43/mi
20:53 split
Half· 13.11 mi
1:28:32
Rank: #5519 (+104)
20K → Half
6:33/mi
4:28 split
25K· 15.53 mi
1:44:55
Rank: #5310 (+209)
Half → 25K
6:45/mi
16:23 split
30K· 18.64 mi
2:06:14
Rank: #4930 (+380)
25K → 30K
6:52/mi
21:19 split
20M
2:15:42
Rank: #4816 (+114)
30K → 20M
6:58/mi
9:28 split
21M
2:23:09
Rank: #4750 (+66)
20M → 21M
7:27/mi
7:27 split
35K· 21.75 mi
2:28:12
Rank: #4673 (+77)
21M → 35K
6:45/mi
5:03 split
23M
2:37:00
Rank: #4597 (+76)
35K → 23M
7:02/mi
8:48 split
24M
2:43:44
Rank: #4489 (+108)
23M → 24M
6:44/mi
6:44 split
40K· 24.85 mi
2:49:41
Rank: #4438 (+51)
24M → 40K
6:58/mi
5:57 split
25.2M
2:52:21
Rank: #4433 (+5)
40K → 25.2M
7:44/mi
2:40 split
Finish· 26.22 mi
2:59:17
Rank: #4441 (-8)
25.2M → Finish
6:48/mi
6:56 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:32
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:30:45
Pace6:55 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4921:216:5221:21
6:52
-
10K
6.21 mi11:07:5342:256:5021:04
6:47
-0:05
15K
9.32 mi11:28:391:03:116:4720:46
6:41
-0:06
20K
12.43 mi11:49:321:24:046:4620:53
6:43
+0:02
Half
13.11 mi11:54:001:28:326:454:28
6:33
-0:10
25K
15.53 mi12:10:231:44:556:4516:23
6:45
+0:12
30K
18.64 mi12:31:422:06:146:4621:19
6:52
+0:07
20M
20.00 mi12:41:102:15:426:479:28
6:58
+0:06
21M
21.00 mi12:48:372:23:096:497:27
7:27
+0:29
35K
21.75 mi12:53:402:28:126:495:03
6:45
-0:42
23M
23.00 mi13:02:282:37:006:508:48
7:02
+0:17
24M
24.00 mi13:09:122:43:446:496:44
6:44
-0:18
40K
24.85 mi13:15:092:49:416:505:57
6:58
+0:14
25.2M
25.20 mi13:17:492:52:216:502:40
7:44
+0:46
Finish
26.22 mi13:24:452:59:176:516:56
6:48
-0:56

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

6:33 /mi

Average Pace

6:51 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:10

94% of race

Time at Steady Pace

7:27

4% of race

Time at Slower Pace

2:40

1% of race

Average Pace: 6:50 /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 mi10:46:4921:216:5221:21
6:52
#6866
10K
6.21 mi11:07:5342:256:5021:04
6:47
#6550
15K
9.32 mi11:28:391:03:116:4720:46
6:41
#5997
20K
12.43 mi11:49:321:24:046:4620:53
6:43
#5623
Half
13.11 mi11:54:001:28:326:454:28
6:33
#5519
25K
15.53 mi12:10:231:44:556:4516:23
6:45
#5310
30K
18.64 mi12:31:422:06:146:4621:19
6:52
#4930
20M
20.00 mi12:41:102:15:426:479:28
6:58
#4816
21M
21.00 mi12:48:372:23:096:497:27
7:27
#4750
35K
21.75 mi12:53:402:28:126:495:03
6:45
#4673
23M
23.00 mi13:02:282:37:006:508:48
7:02
#4597
24M
24.00 mi13:09:122:43:446:496:44
6:44
#4489
40K
24.85 mi13:15:092:49:416:505:57
6:58
#4438
25.2M
25.20 mi13:17:492:52:216:502:40
7:44
#4433
Finish
26.22 mi13:24:452:59:176:516:56
6:48
#4441
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi68666456454955(Top 17%)331(Top 3%)331(Top 6%)
10K6.21 mi3.10 mi6550+316582+63582+636200(Top 22%)535(Top 4%)535(Top 10%)
15K9.32 mi3.11 mi5997+553488+94488+944955(Top 17%)331(Top 3%)331(Top 6%)
20K12.43 mi3.11 mi5623+374443+45443+454639(Top 16%)322(Top 3%)322(Top 6%)
Half13.11 mi0.68 mi5519+104428+15428+154085(Top 14%)241(Top 2%)241(Top 4%)
25K15.53 mi2.42 mi5310+209402+26402+264566(Top 16%)337(Top 3%)337(Top 6%)
30K18.64 mi3.11 mi4930+380362+40362+403841(Top 14%)283(Top 2%)283(Top 5%)
20M20.00 mi1.36 mi4816+114346+16346+163939(Top 14%)314(Top 3%)314(Top 6%)
21M21.00 mi1.00 mi4750+66347-1347-14381(Top 15%)447(Top 4%)447(Top 8%)
35K21.75 mi0.75 mi4673+77344+3344+33868(Top 14%)378(Top 3%)378(Top 7%)
23M23.00 mi1.25 mi4597+76347-3347-33956(Top 14%)406(Top 3%)406(Top 7%)
24M24.00 mi1.00 mi4489+108339+8339+83176(Top 11%)302(Top 2%)302(Top 6%)
40K24.85 mi0.85 mi4438+51340-1340-13695(Top 13%)425(Top 3%)425(Top 8%)
25.2M25.20 mi0.35 mi4433+5347-7347-74579(Top 16%)726(Top 6%)726(Top 13%)
Finish26.22 mi1.02 mi4441-8353-6353-64542(Top 16%)697(Top 6%)697(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4955

Females

331

F18-39

331

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

6200

Females

535

F18-39

535

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4955

Females

331

F18-39

331

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4639

Females

322

F18-39

322

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

4085

Females

241

F18-39

241

Half→25K

13.1 - 15.5 mi

Top 16%
×4story building
+66ft-88ft

Overall

4566

Females

337

F18-39

337

25K→30K

15.5 - 18.6 mi

Top 14%
×9story building
+181ft-148ft

Overall

3841

Females

283

F18-39

283

30K→20M

18.6 - 20.0 mi

Top 14%
×5story building
+64ft-50ft

Overall

3939

Females

314

F18-39

314

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

4381

Females

447

F18-39

447

21M→35K

21.0 - 21.8 mi

Top 14%
×7story building
+17ft-86ft

Overall

3868

Females

378

F18-39

378

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

3956

Females

406

F18-39

406

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3176

Females

302

F18-39

302

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3695

Females

425

F18-39

425

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4579

Females

726

F18-39

726

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2story building
+22ft-21ft

Overall

4542

Females

697

F18-39

697

Passing Analysis

Category:
Athletes Passed
2754
Passed By
329
Net Change
+2425
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6866
5K → 10K38468+316#6866#6550
10K → 15K5629+553#6550#5997
15K → 20K38511+374#5997#5623
20K → Half1040+104#5623#5519
Half → 25K23122+209#5519#5310
25K → 30K39212+380#5310#4930
30K → 20M13218+114#4930#4816
20M → 21M9731+66#4816#4750
21M → 35K8912+77#4750#4673
35K → 23M11034+76#4673#4597
23M → 24M12820+108#4597#4489
24M → 40K6817+51#4489#4438
40K → 25.2M2621+5#4438#4433
25.2M → Finish4654-8#4433#4441
TOTALS2754329+2425
📊

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