Boston Marathon logo
BOSTON MARATHON 2025

Erin Leahy

Bib: 30340•F

MA

0:00
0:00
/ mi
Be the first to cheer!
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
32:56
Rank: #26958
Start → 5K
10:36/mi
32:56 split
10K· 6.21 mi
1:07:34
Rank: #27153 (-195)
5K → 10K
11:09/mi
34:38 split
15K· 9.32 mi
1:41:13
Rank: #26884 (+269)
10K → 15K
10:50/mi
33:39 split
20K· 12.43 mi
2:17:20
Rank: #26854 (+30)
15K → 20K
11:37/mi
36:07 split
Half· 13.11 mi
2:24:38
Rank: #26816 (+38)
20K → Half
10:42/mi
7:18 split
25K· 15.53 mi
2:57:30
Rank: #27041 (-225)
Half → 25K
13:33/mi
32:52 split
30K· 18.64 mi
3:43:57
Rank: #27298 (-257)
25K → 30K
14:57/mi
46:27 split
20M
4:03:25
Rank: #27344 (-46)
30K → 20M
14:19/mi
19:28 split
21M
4:21:49
Rank: #27486 (-142)
20M → 21M
18:24/mi
18:24 split
35K· 21.75 mi
4:32:28
Rank: #27505 (-19)
21M → 35K
14:14/mi
10:39 split
23M
4:47:17
Rank: #27424 (+81)
35K → 23M
11:50/mi
14:49 split
24M
5:00:17
Rank: #27418 (+6)
23M → 24M
13:00/mi
13:00 split
40K· 24.85 mi
5:15:21
Rank: #27511 (-93)
24M → 40K
17:37/mi
15:04 split
25.2M
5:20:08
Rank: #27501 (+10)
40K → 25.2M
13:52/mi
4:47 split
Finish· 26.22 mi
5:31:10
Rank: #27462 (+39)
25.2M → Finish
10:50/mi
11:02 split

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
Time2:24:38
Pace11:02 /mi
2nd Half
Distance13.11 mi
Time3:06:32
Pace14:14 /mi
📊Positive Split: 29.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:3632:5610:3632:56
10:36
-
10K
6.21 mi12:31:141:07:3410:5234:38
11:09
+0:33
15K
9.32 mi13:04:531:41:1310:5233:39
10:50
-0:19
20K
12.43 mi13:41:002:17:2011:0336:07
11:37
+0:47
Half
13.11 mi13:48:182:24:3811:027:18
10:42
-0:55
25K
15.53 mi14:21:102:57:3011:2632:52
13:33
+2:51
30K
18.64 mi15:07:373:43:5712:0146:27
14:57
+1:24
20M
20.00 mi15:27:054:03:2512:1019:28
14:19
-0:38
21M
21.00 mi15:45:294:21:4912:2818:24
18:24
+4:05
35K
21.75 mi15:56:084:32:2812:3210:39
14:14
-4:10
23M
23.00 mi16:10:574:47:1712:2914:49
11:50
-2:24
24M
24.00 mi16:23:575:00:1712:3113:00
13:00
+1:10
40K
24.85 mi16:39:015:15:2112:4115:04
17:37
+4:37
25.2M
25.20 mi16:43:485:20:0812:424:47
13:52
-3:45
Finish
26.22 mi16:54:505:31:1012:3811:02
10:50
-3:02

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

10:36 /mi

Average Pace

12:38 /mi

Slowest Pace

18:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:40

47% of race

Time at Steady Pace

1:05:28

20% of race

Time at Slower Pace

1:50:02

33% of race

Average Pace: 12:38 /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 mi11:56:3632:5610:3632:56
10:36
#26958
10K
6.21 mi12:31:141:07:3410:5234:38
11:09
#27153
15K
9.32 mi13:04:531:41:1310:5233:39
10:50
#26884
20K
12.43 mi13:41:002:17:2011:0336:07
11:37
#26854
Half
13.11 mi13:48:182:24:3811:027:18
10:42
#26816
25K
15.53 mi14:21:102:57:3011:2632:52
13:33
#27041
30K
18.64 mi15:07:373:43:5712:0146:27
14:57
#27298
20M
20.00 mi15:27:054:03:2512:1019:28
14:19
#27344
21M
21.00 mi15:45:294:21:4912:2818:24
18:24
#27486
35K
21.75 mi15:56:084:32:2812:3210:39
14:14
#27505
23M
23.00 mi16:10:574:47:1712:2914:49
11:50
#27424
24M
24.00 mi16:23:575:00:1712:3113:00
13:00
#27418
40K
24.85 mi16:39:015:15:2112:4115:04
17:37
#27511
25.2M
25.20 mi16:43:485:20:0812:424:47
13:52
#27501
Finish
26.22 mi16:54:505:31:1012:3811:02
10:50
#27462
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26958113011130126453(Top 93%)11034(Top 90%)11034(Top 202%)
10K6.21 mi3.10 mi27153-19511448-14711448-14727230(Top 96%)11500(Top 94%)11500(Top 210%)
15K9.32 mi3.11 mi26884+26911286+16211286+16226453(Top 93%)11034(Top 90%)11034(Top 202%)
20K12.43 mi3.11 mi26854+3011273+1311273+1326765(Top 94%)11254(Top 92%)11254(Top 206%)
Half13.11 mi0.68 mi26816+3811254+1911254+1926090(Top 92%)10884(Top 89%)10884(Top 199%)
25K15.53 mi2.42 mi27041-22511405-15111405-15127649(Top 97%)11800(Top 96%)11800(Top 216%)
30K18.64 mi3.11 mi27298-25711585-18011585-18028014(Top 99%)12063(Top 99%)12063(Top 221%)
20M20.00 mi1.36 mi27344-4611611-2611611-2627518(Top 97%)11828(Top 97%)11828(Top 216%)
21M21.00 mi1.00 mi27486-14211705-9411705-9428310(Top 100%)12193(Top 100%)12193(Top 223%)
35K21.75 mi0.75 mi27505-1911719-1411719-1427800(Top 98%)12010(Top 98%)12010(Top 220%)
23M23.00 mi1.25 mi27424+8111675+4411675+4424821(Top 87%)10507(Top 86%)10507(Top 192%)
24M24.00 mi1.00 mi27418+611676-111676-126853(Top 95%)11561(Top 95%)11561(Top 211%)
40K24.85 mi0.85 mi27511-9311732-5611732-5628298(Top 100%)12193(Top 100%)12193(Top 223%)
25.2M25.20 mi0.35 mi27501+1011730+211730+226120(Top 92%)11247(Top 92%)11247(Top 206%)
Finish26.22 mi1.02 mi27462+3911710+2011710+2025001(Top 88%)10661(Top 87%)10661(Top 195%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

26453

Females

11034

F18-39

11034

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

27230

Females

11500

F18-39

11500

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

26453

Females

11034

F18-39

11034

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

26765

Females

11254

F18-39

11254

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

26090

Females

10884

F18-39

10884

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

27649

Females

11800

F18-39

11800

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

28014

Females

12063

F18-39

12063

30K→20M

18.6 - 20.0 mi

Top 97%
×5story building
+64ft-50ft

Overall

27518

Females

11828

F18-39

11828

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

28310

Females

12193

F18-39

12193

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27800

Females

12010

F18-39

12010

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

24821

Females

10507

F18-39

10507

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

26853

Females

11561

F18-39

11561

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

28298

Females

12193

F18-39

12193

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26120

Females

11247

F18-39

11247

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

25001

Females

10661

F18-39

10661

Passing Analysis

Category:
Athletes Passed
739
Passed By
1243
Net Change
-504
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26958
5K → 10K79274-195#26958#27153
10K → 15K28516+269#27153#26884
15K → 20K11888+30#26884#26854
20K → Half391+38#26854#26816
Half → 25K17242-225#26816#27041
25K → 30K25282-257#27041#27298
30K → 20M1157-46#27298#27344
20M → 21M1143-142#27344#27486
21M → 35K524-19#27486#27505
35K → 23M821+81#27505#27424
23M → 24M2317+6#27424#27418
24M → 40K194-93#27418#27511
40K → 25.2M144+10#27511#27501
25.2M → Finish390+39#27501#27462
TOTALS7391243-504
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing