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BOSTON MARATHON 2025

Kathryn Clark

Bib: 26214•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

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
10:15/mi
31:52
↑ 97↓ 3451.5%
10K· 6.21 mi
10:10/mi
1:03:27
↑ 79↓ 1380.4%
15K· 9.32 mi
10:13/mi
1:35:12
↑ 67↓ 78
20K· 12.43 mi
10:30/mi
2:07:48
↑ 106↓ 860.1%
Half· 13.11 mi
9:39/mi
2:14:23
↑ 19↓ 370.5%
25K· 15.53 mi
10:12/mi
2:39:08
↑ 66↓ 880.2%
30K· 18.64 mi
11:49/mi
3:15:52
↑ 181↓ 1480.2%
20M
12:17/mi
3:32:33
↑ 64↓ 500.2%
21M
13:32/mi
3:46:05
↑ 106↓ 241.6%
35K· 21.75 mi
11:34/mi
3:54:44
↑ 17↓ 861.7%
23M
12:48/mi
4:10:46
↑ 23↓ 630.6%
24M
12:36/mi
4:23:22
↓ 821.3%
40K· 24.85 mi
12:44/mi
4:34:15
↓ 200.3%
25.2M
13:35/mi
4:38:56
↑ 13↓ 160.2%
Finish· 26.22 mi
11:51/mi
4:51:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:23
Pace10:15 /mi
2nd Half
Distance13.11 mi
Time2:36:38
Pace11:57 /mi
📊Positive Split: 16.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:5731:5210:1531:52
10:15
-
10K
6.21 mi12:18:321:03:2710:1331:35
10:10
-0:05
15K
9.32 mi12:50:171:35:1210:1331:45
10:13
+0:03
20K
12.43 mi13:22:532:07:4810:1732:36
10:30
+0:17
Half
13.11 mi13:29:282:14:2310:156:35
9:39
-0:51
25K
15.53 mi13:54:132:39:0810:1524:45
10:12
+0:33
30K
18.64 mi14:30:573:15:5210:3036:44
11:49
+1:37
20M
20.00 mi14:47:383:32:3310:3816:41
12:17
+0:28
21M
21.00 mi15:01:103:46:0510:4613:32
13:32
+1:15
35K
21.75 mi15:09:493:54:4410:488:39
11:34
-1:58
23M
23.00 mi15:25:514:10:4610:5416:02
12:48
+1:14
24M
24.00 mi15:38:274:23:2210:5812:36
12:36
-0:12
40K
24.85 mi15:49:204:34:1511:0210:53
12:44
+0:08
25.2M
25.20 mi15:54:014:38:5611:044:41
13:35
+0:51
Finish
26.22 mi16:06:064:51:0111:0612:05
11:51
-1:44

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

9:39 /mi

Average Pace

11:06 /mi

Slowest Pace

13:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:08

55% of race

Time at Steady Pace

1:14:09

25% of race

Time at Slower Pace

57:44

20% of race

Average Pace: 11:06 /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 mi11:46:5731:5210:1531:52
10:15
#26205
10K
6.21 mi12:18:321:03:2710:1331:35
10:10
#25933
15K
9.32 mi12:50:171:35:1210:1331:45
10:13
#25743
20K
12.43 mi13:22:532:07:4810:1732:36
10:30
#25580
Half
13.11 mi13:29:282:14:2310:156:35
9:39
#25513
25K
15.53 mi13:54:132:39:0810:1524:45
10:12
#25211
30K
18.64 mi14:30:573:15:5210:3036:44
11:49
#25250
20M
20.00 mi14:47:383:32:3310:3816:41
12:17
#25291
21M
21.00 mi15:01:103:46:0510:4613:32
13:32
#25333
35K
21.75 mi15:09:493:54:4410:488:39
11:34
#25327
23M
23.00 mi15:25:514:10:4610:5416:02
12:48
#25396
24M
24.00 mi15:38:274:23:2210:5812:36
12:36
#25470
40K
24.85 mi15:49:204:34:1511:0210:53
12:44
#25501
25.2M
25.20 mi15:54:014:38:5611:044:41
13:35
#25520
Finish
26.22 mi16:06:064:51:0111:0612:05
11:51
#25584
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26205108741087425448(Top 90%)10480(Top 86%)10480(Top 192%)
10K6.21 mi3.10 mi25933+27210734+14010734+14025662(Top 90%)10612(Top 87%)10612(Top 194%)
15K9.32 mi3.11 mi25743+19010637+9710637+9725448(Top 90%)10480(Top 86%)10480(Top 192%)
20K12.43 mi3.11 mi25580+16310550+8710550+8725181(Top 89%)10364(Top 85%)10364(Top 190%)
Half13.11 mi0.68 mi25513+6710519+3110519+3123950(Top 84%)9682(Top 79%)9682(Top 177%)
25K15.53 mi2.42 mi25211+30210368+15110368+15123738(Top 84%)9611(Top 79%)9611(Top 176%)
30K18.64 mi3.11 mi25250-3910417-4910417-4925348(Top 89%)10585(Top 87%)10585(Top 194%)
20M20.00 mi1.36 mi25291-4110462-4510462-4525630(Top 90%)10815(Top 88%)10815(Top 198%)
21M21.00 mi1.00 mi25333-4210491-2910491-2925695(Top 90%)10903(Top 89%)10903(Top 199%)
35K21.75 mi0.75 mi25327+610502-1110502-1125167(Top 89%)10678(Top 87%)10678(Top 195%)
23M23.00 mi1.25 mi25396-6910554-5210554-5226150(Top 92%)11167(Top 91%)11167(Top 204%)
24M24.00 mi1.00 mi25470-7410596-4210596-4226420(Top 93%)11329(Top 93%)11329(Top 207%)
40K24.85 mi0.85 mi25501-3110629-3310629-3325960(Top 91%)11127(Top 91%)11127(Top 203%)
25.2M25.20 mi0.35 mi25520-1910646-1710646-1725748(Top 91%)11065(Top 90%)11065(Top 202%)
Finish26.22 mi1.02 mi25584-6410690-4410690-4426618(Top 94%)11438(Top 94%)11438(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25448

Females

10480

F18-39

10480

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

25662

Females

10612

F18-39

10612

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25448

Females

10480

F18-39

10480

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

25181

Females

10364

F18-39

10364

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

23950

Females

9682

F18-39

9682

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23738

Females

9611

F18-39

9611

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

25348

Females

10585

F18-39

10585

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25630

Females

10815

F18-39

10815

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25695

Females

10903

F18-39

10903

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25167

Females

10678

F18-39

10678

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

26150

Females

11167

F18-39

11167

23M→24M

23.0 - 24.0 mi

Top 93%
×6story building
+12ft-82ft

Overall

26420

Females

11329

F18-39

11329

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25960

Females

11127

F18-39

11127

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25748

Females

11065

F18-39

11065

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26618

Females

11438

F18-39

11438

Passing Analysis

Category:
Athletes Passed
1440
Passed By
819
Net Change
+621
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26205
5K → 10K33260+272#26205#25933
10K → 15K23545+190#25933#25743
15K → 20K20643+163#25743#25580
20K → Half703+67#25580#25513
Half → 25K3075+302#25513#25211
25K → 30K112151-39#25211#25250
30K → 20M4081-41#25250#25291
20M → 21M2769-42#25291#25333
21M → 35K2721+6#25333#25327
35K → 23M1988-69#25327#25396
23M → 24M1993-74#25396#25470
24M → 40K1950-31#25470#25501
40K → 25.2M1736-19#25501#25520
25.2M → Finish1074-64#25520#25584
TOTALS1440819+621
📊

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