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BOSTON MARATHON 2025

Kathryn Delaney

Bib: 27159•F

MA

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
34:38
Rank: #27712
Start → 5K
34:38 | 11:09/mi
10K· 6.21 mi
1:09:08
Rank: #27451 (+261)
5K → 10K
34:30 | 11:06/mi
15K· 9.32 mi
1:43:17
Rank: #27177 (+274)
10K → 15K
34:09 | 11:00/mi
20K· 12.43 mi
2:13:42
Rank: #26421 (+756)
15K → 20K
30:25 | 9:47/mi
Half· 13.11 mi
2:20:19
Rank: #26318 (+103)
20K → Half
6:37 | 9:42/mi
25K· 15.53 mi
2:44:57
Rank: #25902 (+416)
Half → 25K
24:38 | 10:10/mi
30K· 18.64 mi
3:20:10
Rank: #25655 (+247)
25K → 30K
35:13 | 11:20/mi
20M
3:35:14
Rank: #25518 (+137)
30K → 20M
15:04 | 11:05/mi
21M
3:46:50
Rank: #25405 (+113)
20M → 21M
11:36 | 11:36/mi
35K· 21.75 mi
3:55:20
Rank: #25381 (+24)
21M → 35K
8:30 | 11:22/mi
23M
4:10:14
Rank: #25361 (+20)
35K → 23M
14:54 | 11:54/mi
24M
4:21:57
Rank: #25352 (+9)
23M → 24M
11:43 | 11:43/mi
40K· 24.85 mi
4:32:01
Rank: #25332 (+20)
24M → 40K
10:04 | 11:46/mi
25.2M
4:36:24
Rank: #25321 (+11)
40K → 25.2M
4:23 | 12:43/mi
Finish· 26.22 mi
4:47:46
Rank: #25348 (-27)
25.2M → Finish
11:22 | 11:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:19
Pace10:42 /mi
2nd Half
Distance13.11 mi
Time2:27:27
Pace11:15 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5434:3811:0934:38
11:09
-
10K
6.21 mi12:25:241:09:0811:0834:30
11:06
-0:03
15K
9.32 mi12:59:331:43:1711:0534:09
11:00
-0:06
20K
12.43 mi13:29:582:13:4210:4630:25
9:47
-1:13
Half
13.11 mi13:36:352:20:1910:426:37
9:42
-0:05
25K
15.53 mi14:01:132:44:5710:3724:38
10:10
+0:28
30K
18.64 mi14:36:263:20:1010:4435:13
11:20
+1:10
20M
20.00 mi14:51:303:35:1410:4615:04
11:05
-0:15
21M
21.00 mi15:03:063:46:5010:4811:36
11:36
+0:31
35K
21.75 mi15:11:363:55:2010:498:30
11:22
-0:14
23M
23.00 mi15:26:304:10:1410:5314:54
11:54
+0:32
24M
24.00 mi15:38:134:21:5710:5511:43
11:43
-0:11
40K
24.85 mi15:48:174:32:0110:5710:04
11:46
+0:03
25.2M
25.20 mi15:52:404:36:2410:584:23
12:43
+0:57
Finish
26.22 mi16:04:024:47:4610:5911:22
11:09
-1:34

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

9:42 /mi

Average Pace

10:59 /mi

Slowest Pace

12:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:40

21% of race

Time at Steady Pace

2:53:26

60% of race

Time at Slower Pace

52:40

18% of race

Average Pace: 10:59 /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 mi11:50:5434:3811:0934:38
11:09
#27712
10K
6.21 mi12:25:241:09:0811:0834:30
11:06
#27451
15K
9.32 mi12:59:331:43:1711:0534:09
11:00
#27177
20K
12.43 mi13:29:582:13:4210:4630:25
9:47
#26421
Half
13.11 mi13:36:352:20:1910:426:37
9:42
#26318
25K
15.53 mi14:01:132:44:5710:3724:38
10:10
#25902
30K
18.64 mi14:36:263:20:1010:4435:13
11:20
#25655
20M
20.00 mi14:51:303:35:1410:4615:04
11:05
#25518
21M
21.00 mi15:03:063:46:5010:4811:36
11:36
#25405
35K
21.75 mi15:11:363:55:2010:498:30
11:22
#25381
23M
23.00 mi15:26:304:10:1410:5314:54
11:54
#25361
24M
24.00 mi15:38:134:21:5710:5511:43
11:43
#25352
40K
24.85 mi15:48:174:32:0110:5710:04
11:46
#25332
25.2M
25.20 mi15:52:404:36:2410:584:23
12:43
#25321
Finish
26.22 mi16:04:024:47:4610:5911:22
11:09
#25348
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27712117731177326663(Top 94%)11168(Top 91%)11168(Top 204%)
10K6.21 mi3.10 mi27451+26111615+15811615+15827193(Top 96%)11480(Top 94%)11480(Top 210%)
15K9.32 mi3.11 mi27177+27411455+16011455+16026663(Top 94%)11168(Top 91%)11168(Top 204%)
20K12.43 mi3.11 mi26421+75611024+43111024+43123730(Top 84%)9566(Top 78%)9566(Top 175%)
Half13.11 mi0.68 mi26318+10310957+6710957+6724067(Top 85%)9749(Top 80%)9749(Top 178%)
25K15.53 mi2.42 mi25902+41610743+21410743+21423627(Top 83%)9548(Top 78%)9548(Top 175%)
30K18.64 mi3.11 mi25655+24710647+9610647+9624600(Top 87%)10180(Top 83%)10180(Top 186%)
20M20.00 mi1.36 mi25518+13710585+6210585+6223764(Top 84%)9831(Top 80%)9831(Top 180%)
21M21.00 mi1.00 mi25405+11310538+4710538+4722796(Top 80%)9401(Top 77%)9401(Top 172%)
35K21.75 mi0.75 mi25381+2410535+310535+324851(Top 87%)10510(Top 86%)10510(Top 192%)
23M23.00 mi1.25 mi25361+2010534+110534+124954(Top 88%)10579(Top 87%)10579(Top 193%)
24M24.00 mi1.00 mi25352+910532+210532+225257(Top 89%)10756(Top 88%)10756(Top 197%)
40K24.85 mi0.85 mi25332+2010526+610526+624578(Top 87%)10467(Top 86%)10467(Top 191%)
25.2M25.20 mi0.35 mi25321+11105261052624532(Top 86%)10440(Top 85%)10440(Top 191%)
Finish26.22 mi1.02 mi25348-2710546-2010546-2025622(Top 90%)10969(Top 90%)10969(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

26663

Females

11168

F18-39

11168

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27193

Females

11480

F18-39

11480

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

26663

Females

11168

F18-39

11168

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

23730

Females

9566

F18-39

9566

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24067

Females

9749

F18-39

9749

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23627

Females

9548

F18-39

9548

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24600

Females

10180

F18-39

10180

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

23764

Females

9831

F18-39

9831

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

22796

Females

9401

F18-39

9401

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

24851

Females

10510

F18-39

10510

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

24954

Females

10579

F18-39

10579

23M→24M

23.0 - 24.0 mi

Top 89%
×6stories
+12ft-82ft

Overall

25257

Females

10756

F18-39

10756

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24578

Females

10467

F18-39

10467

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24532

Females

10440

F18-39

10440

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

25622

Females

10969

F18-39

10969

Passing Analysis

Category:
Athletes Passed
2576
Passed By
212
Net Change
+2364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27712
5K → 10K27918+261#27712#27451
10K → 15K2839+274#27451#27177
15K → 20K7560+756#27177#26421
20K → Half1041+103#26421#26318
Half → 25K4160+416#26318#25902
25K → 30K26518+247#25902#25655
30K → 20M1403+137#25655#25518
20M → 21M1141+113#25518#25405
21M → 35K4319+24#25405#25381
35K → 23M5535+20#25381#25361
23M → 24M4031+9#25361#25352
24M → 40K4323+20#25352#25332
40K → 25.2M187+11#25332#25321
25.2M → Finish2047-27#25321#25348
TOTALS2576212+2364
📊

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