Boston Marathon logo
BOSTON MARATHON 2025

Katherine Toth

Bib: 15647•F

TX

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 50%
Gender (Female)
#0 / 12228
Top 36%
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
7:45/mi
24:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
48:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:59/mi
1:12:55
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:38:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:44:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:18/mi
2:04:26
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:30:27
↑ 181↓ 1480.2%
20M
8:36/mi
2:42:08
↑ 64↓ 500.2%
21M
9:14/mi
2:51:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:57:14
↑ 17↓ 861.7%
23M
8:19/mi
3:07:39
↑ 23↓ 630.6%
24M
7:55/mi
3:15:34
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:22:30
↓ 200.3%
25.2M
8:54/mi
3:25:34
↑ 13↓ 160.2%
Finish· 26.22 mi
7:50/mi
3:33:33
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:18
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:49:15
Pace8:20 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:0824:047:4524:04
7:45
-
10K
6.21 mi11:21:1048:067:4424:02
7:44
-0:01
15K
9.32 mi11:45:591:12:557:4924:49
7:59
+0:15
20K
12.43 mi12:11:571:38:537:5725:58
8:21
+0:22
Half
13.11 mi12:17:221:44:187:575:25
7:56
-0:25
25K
15.53 mi12:37:302:04:268:0120:08
8:18
+0:22
30K
18.64 mi13:03:312:30:278:0426:01
8:22
+0:04
20M
20.00 mi13:15:122:42:088:0611:41
8:36
+0:14
21M
21.00 mi13:24:262:51:228:109:14
9:14
+0:38
35K
21.75 mi13:30:182:57:148:095:52
7:51
-1:23
23M
23.00 mi13:40:433:07:398:1010:25
8:19
+0:28
24M
24.00 mi13:48:383:15:348:097:55
7:55
-0:24
40K
24.85 mi13:55:343:22:308:096:56
8:07
+0:12
25.2M
25.20 mi13:58:383:25:348:093:04
8:54
+0:47
Finish
26.22 mi14:06:373:33:338:097:59
7:50
-1:04

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

7:44 /mi

Average Pace

8:09 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:34

89% of race

Time at Steady Pace

14:45

7% of race

Time at Slower Pace

9:14

4% of race

Average Pace: 8:09 /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 mi10:57:0824:047:4524:04
7:45
#14362
10K
6.21 mi11:21:1048:067:4424:02
7:44
#14261
15K
9.32 mi11:45:591:12:557:4924:49
7:59
#14838
20K
12.43 mi12:11:571:38:537:5725:58
8:21
#15616
Half
13.11 mi12:17:221:44:187:575:25
7:56
#15597
25K
15.53 mi12:37:302:04:268:0120:08
8:18
#15629
30K
18.64 mi13:03:312:30:278:0426:01
8:22
#15286
20M
20.00 mi13:15:122:42:088:0611:41
8:36
#15193
21M
21.00 mi13:24:262:51:228:109:14
9:14
#15103
35K
21.75 mi13:30:182:57:148:095:52
7:51
#14942
23M
23.00 mi13:40:433:07:398:1010:25
8:19
#14728
24M
24.00 mi13:48:383:15:348:097:55
7:55
#14532
40K
24.85 mi13:55:343:22:308:096:56
8:07
#14365
25.2M
25.20 mi13:58:383:25:348:093:04
8:54
#14308
Finish
26.22 mi14:06:373:33:338:097:59
7:50
#14180
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143624137413715963(Top 56%)5118(Top 42%)5118(Top 94%)
10K6.21 mi3.10 mi14261+1014094+434094+4314224(Top 50%)4095(Top 33%)4095(Top 75%)
15K9.32 mi3.11 mi14838-5774461-3674461-36715963(Top 56%)5118(Top 42%)5118(Top 94%)
20K12.43 mi3.11 mi15616-7784937-4764937-47617280(Top 61%)5925(Top 48%)5925(Top 108%)
Half13.11 mi0.68 mi15597+194929+84929+815454(Top 54%)4854(Top 40%)4854(Top 89%)
25K15.53 mi2.42 mi15629-324958-294958-2915948(Top 56%)5280(Top 43%)5280(Top 97%)
30K18.64 mi3.11 mi15286+3434815+1434815+14313994(Top 49%)4363(Top 36%)4363(Top 80%)
20M20.00 mi1.36 mi15193+934805+104805+1014427(Top 51%)4737(Top 39%)4737(Top 87%)
21M21.00 mi1.00 mi15103+904785+204785+2014818(Top 52%)5058(Top 41%)5058(Top 92%)
35K21.75 mi0.75 mi14942+1614704+814704+8111205(Top 39%)3231(Top 26%)3231(Top 59%)
23M23.00 mi1.25 mi14728+2144615+894615+8912186(Top 43%)3843(Top 31%)3843(Top 70%)
24M24.00 mi1.00 mi14532+1964531+844531+8410713(Top 38%)3154(Top 26%)3154(Top 58%)
40K24.85 mi0.85 mi14365+1674478+534478+5310996(Top 39%)3413(Top 28%)3413(Top 62%)
25.2M25.20 mi0.35 mi14308+574454+244454+2411286(Top 40%)3660(Top 30%)3660(Top 67%)
Finish26.22 mi1.02 mi14180+1284408+464408+4611719(Top 41%)3810(Top 31%)3810(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

15963

Females

5118

F18-39

5118

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14224

Females

4095

F18-39

4095

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

15963

Females

5118

F18-39

5118

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17280

Females

5925

F18-39

5925

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15454

Females

4854

F18-39

4854

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15948

Females

5280

F18-39

5280

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13994

Females

4363

F18-39

4363

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

14427

Females

4737

F18-39

4737

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14818

Females

5058

F18-39

5058

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

11205

Females

3231

F18-39

3231

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

12186

Females

3843

F18-39

3843

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10713

Females

3154

F18-39

3154

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10996

Females

3413

F18-39

3413

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11286

Females

3660

F18-39

3660

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11719

Females

3810

F18-39

3810

Passing Analysis

Category:
Athletes Passed
2408
Passed By
2226
Net Change
+182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14362
5K → 10K333232+101#14362#14261
10K → 15K66643-577#14261#14838
15K → 20K68846-778#14838#15616
20K → Half4425+19#15616#15597
Half → 25K167199-32#15597#15629
25K → 30K42582+343#15629#15286
30K → 20M15764+93#15286#15193
20M → 21M15464+90#15193#15103
21M → 35K1654+161#15103#14942
35K → 23M23723+214#14942#14728
23M → 24M2037+196#14728#14532
24M → 40K1769+167#14532#14365
40K → 25.2M603+57#14365#14308
25.2M → Finish15325+128#14308#14180
TOTALS24082226+182
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing