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BOSTON MARATHON 2025

Aspen Dirr

Bib: 15815•F

IN

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
7:49/mi
24:16
↑ 97↓ 3451.5%
10K· 6.21 mi
8:43/mi
51:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:18:55
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:46:44
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:52:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:07/mi
2:11:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:12/mi
2:40:34
↑ 181↓ 1480.2%
20M
10:56/mi
2:55:26
↑ 64↓ 500.2%
21M
14:30/mi
3:09:56
↑ 106↓ 241.6%
35K· 21.75 mi
8:27/mi
3:16:15
↑ 17↓ 861.7%
23M
10:05/mi
3:28:52
↑ 23↓ 630.6%
24M
10:05/mi
3:38:57
↓ 821.3%
40K· 24.85 mi
11:42/mi
3:48:57
↓ 200.3%
25.2M
11:27/mi
3:52:54
↑ 13↓ 160.2%
Finish· 26.22 mi
9:16/mi
4:02:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:18
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time2:10:03
Pace9:55 /mi
📊Positive Split: 15.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:2824:167:4924:16
7:49
-
10K
6.21 mi11:22:3251:208:1627:04
8:43
+0:54
15K
9.32 mi11:50:071:18:558:2827:35
8:53
+0:10
20K
12.43 mi12:17:561:46:448:3527:49
8:57
+0:04
Half
13.11 mi12:23:301:52:188:345:34
8:10
-0:47
25K
15.53 mi12:43:112:11:598:3019:41
8:07
-0:03
30K
18.64 mi13:11:462:40:348:3728:35
9:12
+1:05
20M
20.00 mi13:26:382:55:268:4614:52
10:56
+1:44
21M
21.00 mi13:41:083:09:569:0314:30
14:30
+3:34
35K
21.75 mi13:47:273:16:159:016:19
8:27
-6:03
23M
23.00 mi14:00:043:28:529:0512:37
10:05
+1:38
24M
24.00 mi14:10:093:38:579:0710:05
10:05
0:00
40K
24.85 mi14:20:093:48:579:1310:00
11:42
+1:37
25.2M
25.20 mi14:24:063:52:549:153:57
11:27
-0:15
Finish
26.22 mi14:33:334:02:219:159:27
9:16
-2:11

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

7:49 /mi

Average Pace

9:15 /mi

Slowest Pace

14:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

49:31

20% of race

Time at Steady Pace

2:06:49

52% of race

Time at Slower Pace

1:06:01

27% of race

Average Pace: 9:15 /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 mi10:55:2824:167:4924:16
7:49
#14930
10K
6.21 mi11:22:3251:208:1627:04
8:43
#18390
15K
9.32 mi11:50:071:18:558:2827:35
8:53
#19468
20K
12.43 mi12:17:561:46:448:3527:49
8:57
#19815
Half
13.11 mi12:23:301:52:188:345:34
8:10
#19689
25K
15.53 mi12:43:112:11:598:3019:41
8:07
#18879
30K
18.64 mi13:11:462:40:348:3728:35
9:12
#18835
20M
20.00 mi13:26:382:55:268:4614:52
10:56
#19420
21M
21.00 mi13:41:083:09:569:0314:30
14:30
#20415
35K
21.75 mi13:47:273:16:159:016:19
8:27
#20233
23M
23.00 mi14:00:043:28:529:0512:37
10:05
#20293
24M
24.00 mi14:10:093:38:579:0710:05
10:05
#20395
40K
24.85 mi14:20:093:48:579:1310:00
11:42
#20666
25.2M
25.20 mi14:24:063:52:549:153:57
11:27
#20698
Finish
26.22 mi14:33:334:02:219:159:27
9:16
#20680
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi149304489448921460(Top 76%)8255(Top 68%)8255(Top 151%)
10K6.21 mi3.10 mi18390-34606553-20646553-206420952(Top 74%)7994(Top 65%)7994(Top 146%)
15K9.32 mi3.11 mi19468-10787165-6127165-61221460(Top 76%)8255(Top 68%)8255(Top 151%)
20K12.43 mi3.11 mi19815-3477373-2087373-20820745(Top 73%)7918(Top 65%)7918(Top 145%)
Half13.11 mi0.68 mi19689+1267301+727301+7217107(Top 60%)5845(Top 48%)5845(Top 107%)
25K15.53 mi2.42 mi18879+8106847+4546847+45414783(Top 52%)4639(Top 38%)4639(Top 85%)
30K18.64 mi3.11 mi18835+446851-46851-418647(Top 66%)6920(Top 57%)6920(Top 127%)
20M20.00 mi1.36 mi19420-5857217-3667217-36623481(Top 83%)9671(Top 79%)9671(Top 177%)
21M21.00 mi1.00 mi20415-9957806-5897806-58926717(Top 94%)11428(Top 93%)11428(Top 209%)
35K21.75 mi0.75 mi20233+1827726+807726+8015195(Top 53%)5357(Top 44%)5357(Top 98%)
23M23.00 mi1.25 mi20293-607783-577783-5720742(Top 73%)8426(Top 69%)8426(Top 154%)
24M24.00 mi1.00 mi20395-1027847-647847-6421599(Top 76%)8908(Top 73%)8908(Top 163%)
40K24.85 mi0.85 mi20666-2718012-1658012-16524479(Top 86%)10412(Top 85%)10412(Top 190%)
25.2M25.20 mi0.35 mi20698-328034-228034-2221953(Top 77%)9125(Top 75%)9125(Top 167%)
Finish26.22 mi1.02 mi20680+188043-98043-920290(Top 71%)8288(Top 68%)8288(Top 152%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21460

Females

8255

F18-39

8255

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

20952

Females

7994

F18-39

7994

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21460

Females

8255

F18-39

8255

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20745

Females

7918

F18-39

7918

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

17107

Females

5845

F18-39

5845

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14783

Females

4639

F18-39

4639

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18647

Females

6920

F18-39

6920

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23481

Females

9671

F18-39

9671

20M→21M

20.0 - 21.0 mi

Top 94%
×8story building
+106ft-24ft

Overall

26717

Females

11428

F18-39

11428

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

15195

Females

5357

F18-39

5357

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

20742

Females

8426

F18-39

8426

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21599

Females

8908

F18-39

8908

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24479

Females

10412

F18-39

10412

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21953

Females

9125

F18-39

9125

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20290

Females

8288

F18-39

8288

Passing Analysis

Category:
Athletes Passed
1720
Passed By
7470
Net Change
-5750
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14930
5K → 10K73467-3460#14930#18390
10K → 15K271105-1078#18390#19468
15K → 20K106453-347#19468#19815
20K → Half1293+126#19815#19689
Half → 25K8100+810#19689#18879
25K → 30K266222+44#18879#18835
30K → 20M18603-585#18835#19420
20M → 21M51000-995#19420#20415
21M → 35K1820+182#20415#20233
35K → 23M68128-60#20233#20293
23M → 24M26128-102#20293#20395
24M → 40K13284-271#20395#20666
40K → 25.2M941-32#20666#20698
25.2M → Finish5436+18#20698#20680
TOTALS17207470-5750
📊

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