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BOSTON MARATHON 2025

Katherine Douglas

Bib: 26674•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
9:01/mi
28:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:46/mi
55:16
↑ 79↓ 1380.4%
15K· 9.32 mi
8:32/mi
1:21:47
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:47:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:53:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:14:00
↑ 66↓ 880.2%
30K· 18.64 mi
9:20/mi
2:43:01
↑ 181↓ 1480.2%
20M
9:07/mi
2:55:24
↑ 64↓ 500.2%
21M
9:27/mi
3:04:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
3:11:39
↑ 17↓ 861.7%
23M
9:25/mi
3:23:26
↑ 23↓ 630.6%
24M
9:21/mi
3:32:47
↓ 821.3%
40K· 24.85 mi
9:25/mi
3:40:50
↓ 200.3%
25.2M
10:03/mi
3:44:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:52:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:27
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:59:31
Pace9:07 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1428:029:0128:02
9:01
-
10K
6.21 mi12:17:2855:168:5427:14
8:46
-0:15
15K
9.32 mi12:43:591:21:478:4626:31
8:32
-0:14
20K
12.43 mi13:09:571:47:458:4025:58
8:21
-0:11
Half
13.11 mi13:15:391:53:278:395:42
8:21
0:00
25K
15.53 mi13:36:122:14:008:3820:33
8:29
+0:08
30K
18.64 mi14:05:132:43:018:4529:01
9:20
+0:51
20M
20.00 mi14:17:362:55:248:4612:23
9:07
-0:13
21M
21.00 mi14:27:033:04:518:489:27
9:27
+0:20
35K
21.75 mi14:33:513:11:398:496:48
9:05
-0:22
23M
23.00 mi14:45:383:23:268:5111:47
9:25
+0:20
24M
24.00 mi14:54:593:32:478:529:21
9:21
-0:04
40K
24.85 mi15:03:023:40:508:538:03
9:25
+0:04
25.2M
25.20 mi15:06:303:44:188:543:28
10:03
+0:38
Finish
26.22 mi15:15:103:52:588:548:40
8:30
-1:33

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

8:21 /mi

Average Pace

8:54 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:38

49% of race

Time at Steady Pace

47:13

20% of race

Time at Slower Pace

1:11:07

31% of race

Average Pace: 8:53 /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 mi11:50:1428:029:0128:02
9:01
#22513
10K
6.21 mi12:17:2855:168:5427:14
8:46
#21926
15K
9.32 mi12:43:591:21:478:4626:31
8:32
#21122
20K
12.43 mi13:09:571:47:458:4025:58
8:21
#20249
Half
13.11 mi13:15:391:53:278:395:42
8:21
#20142
25K
15.53 mi13:36:122:14:008:3820:33
8:29
#19659
30K
18.64 mi14:05:132:43:018:4529:01
9:20
#19564
20M
20.00 mi14:17:362:55:248:4612:23
9:07
#19404
21M
21.00 mi14:27:033:04:518:489:27
9:27
#19194
35K
21.75 mi14:33:513:11:398:496:48
9:05
#19176
23M
23.00 mi14:45:383:23:268:5111:47
9:25
#19128
24M
24.00 mi14:54:593:32:478:529:21
9:21
#19120
40K
24.85 mi15:03:023:40:508:538:03
9:25
#19078
25.2M
25.20 mi15:06:303:44:188:543:28
10:03
#19047
Finish
26.22 mi15:15:103:52:588:548:40
8:30
#18944
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi225138910891019550(Top 69%)7202(Top 59%)7202(Top 132%)
10K6.21 mi3.10 mi21926+5878564+3468564+34621232(Top 75%)8159(Top 67%)8159(Top 149%)
15K9.32 mi3.11 mi21122+8048099+4658099+46519550(Top 69%)7202(Top 59%)7202(Top 132%)
20K12.43 mi3.11 mi20249+8737617+4827617+48217301(Top 61%)5946(Top 49%)5946(Top 109%)
Half13.11 mi0.68 mi20142+1077555+627555+6218389(Top 65%)6566(Top 54%)6566(Top 120%)
25K15.53 mi2.42 mi19659+4837293+2627293+26217054(Top 60%)5889(Top 48%)5889(Top 108%)
30K18.64 mi3.11 mi19564+957275+187275+1819301(Top 68%)7285(Top 60%)7285(Top 133%)
20M20.00 mi1.36 mi19404+1607208+677208+6717398(Top 61%)6371(Top 52%)6371(Top 116%)
21M21.00 mi1.00 mi19194+2107109+997109+9915888(Top 56%)5657(Top 46%)5657(Top 103%)
35K21.75 mi0.75 mi19176+187116-77116-718687(Top 66%)7295(Top 60%)7295(Top 133%)
23M23.00 mi1.25 mi19128+487117-17117-118299(Top 64%)7136(Top 58%)7136(Top 130%)
24M24.00 mi1.00 mi19120+87135-187135-1819047(Top 67%)7567(Top 62%)7567(Top 138%)
40K24.85 mi0.85 mi19078+427136-17136-118365(Top 65%)7314(Top 60%)7314(Top 134%)
25.2M25.20 mi0.35 mi19047+317135+17135+117314(Top 61%)6764(Top 55%)6764(Top 124%)
Finish26.22 mi1.02 mi18944+1037097+387097+3816285(Top 57%)6189(Top 51%)6189(Top 113%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19550

Females

7202

F18-39

7202

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21232

Females

8159

F18-39

8159

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19550

Females

7202

F18-39

7202

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17301

Females

5946

F18-39

5946

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18389

Females

6566

F18-39

6566

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17054

Females

5889

F18-39

5889

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19301

Females

7285

F18-39

7285

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

17398

Females

6371

F18-39

6371

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15888

Females

5657

F18-39

5657

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18687

Females

7295

F18-39

7295

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

18299

Females

7136

F18-39

7136

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

19047

Females

7567

F18-39

7567

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18365

Females

7314

F18-39

7314

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17314

Females

6764

F18-39

6764

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

16285

Females

6189

F18-39

6189

Passing Analysis

Category:
Athletes Passed
4121
Passed By
552
Net Change
+3569
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22513
5K → 10K65871+587#22513#21926
10K → 15K81915+804#21926#21122
15K → 20K8741+873#21122#20249
20K → Half1114+107#20249#20142
Half → 25K4874+483#20142#19659
25K → 30K258163+95#19659#19564
30K → 20M19333+160#19564#19404
20M → 21M22515+210#19404#19194
21M → 35K6042+18#19194#19176
35K → 23M11264+48#19176#19128
23M → 24M7163+8#19128#19120
24M → 40K8745+42#19120#19078
40K → 25.2M5120+31#19078#19047
25.2M → Finish11512+103#19047#18944
TOTALS4121552+3569
📊

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