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BOSTON MARATHON 2025

Cassie Buhr

Bib: 19122•F

WA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 42%
Gender (Female)
#0 / 12228
Top 26%
Division (F18-39)
#0 / 5469
Top 44%
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
7:38/mi
23:43
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:36/mi
1:10:49
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:35:57
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:41:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
2:00:20
↑ 66↓ 880.2%
30K· 18.64 mi
8:03/mi
2:25:20
↑ 181↓ 1480.2%
20M
8:14/mi
2:36:31
↑ 64↓ 500.2%
21M
8:16/mi
2:44:47
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:50:18
↑ 17↓ 861.7%
23M
7:47/mi
3:00:03
↑ 23↓ 630.6%
24M
7:39/mi
3:07:42
↓ 821.3%
40K· 24.85 mi
8:02/mi
3:14:34
↓ 200.3%
25.2M
8:48/mi
3:17:36
↑ 13↓ 160.2%
Finish· 26.22 mi
7:47/mi
3:25:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:08
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:44:24
Pace7:58 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3623:437:3823:43
7:38
-
10K
6.21 mi11:38:0647:137:3623:30
7:34
-0:04
15K
9.32 mi12:01:421:10:497:3623:36
7:36
+0:02
20K
12.43 mi12:26:501:35:577:4325:08
8:05
+0:29
Half
13.11 mi12:32:011:41:087:435:11
7:36
-0:29
25K
15.53 mi12:51:132:00:207:4519:12
7:55
+0:19
30K
18.64 mi13:16:132:25:207:4825:00
8:03
+0:08
20M
20.00 mi13:27:242:36:317:5011:11
8:14
+0:11
21M
21.00 mi13:35:402:44:477:518:16
8:16
+0:02
35K
21.75 mi13:41:112:50:187:505:31
7:22
-0:54
23M
23.00 mi13:50:563:00:037:509:45
7:47
+0:25
24M
24.00 mi13:58:353:07:427:497:39
7:39
-0:08
40K
24.85 mi14:05:273:14:347:506:52
8:02
+0:23
25.2M
25.20 mi14:08:293:17:367:503:02
8:48
+0:46
Finish
26.22 mi14:16:253:25:327:517:56
7:47
-1:01

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

7:22 /mi

Average Pace

7:51 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:03

89% of race

Time at Steady Pace

19:27

9% of race

Time at Slower Pace

3:02

1% of race

Average Pace: 7:50 /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 mi11:14:3623:437:3823:43
7:38
#13391
10K
6.21 mi11:38:0647:137:3623:30
7:34
#13040
15K
9.32 mi12:01:421:10:497:3623:36
7:36
#12843
20K
12.43 mi12:26:501:35:577:4325:08
8:05
#13541
Half
13.11 mi12:32:011:41:087:435:11
7:36
#13497
25K
15.53 mi12:51:132:00:207:4519:12
7:55
#13406
30K
18.64 mi13:16:132:25:207:4825:00
8:03
#13045
20M
20.00 mi13:27:242:36:317:5011:11
8:14
#12949
21M
21.00 mi13:35:402:44:477:518:16
8:16
#12669
35K
21.75 mi13:41:112:50:187:505:31
7:22
#12464
23M
23.00 mi13:50:563:00:037:509:45
7:47
#12190
24M
24.00 mi13:58:353:07:427:497:39
7:39
#12016
40K
24.85 mi14:05:273:14:347:506:52
8:02
#11928
25.2M
25.20 mi14:08:293:17:367:503:02
8:48
#11897
Finish
26.22 mi14:16:253:25:327:517:56
7:47
#11850
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi133913541354112578(Top 44%)3205(Top 26%)3205(Top 59%)
10K6.21 mi3.10 mi13040+3513364+1773364+17712704(Top 45%)3200(Top 26%)3200(Top 59%)
15K9.32 mi3.11 mi12843+1973296+683296+6812578(Top 44%)3205(Top 26%)3205(Top 59%)
20K12.43 mi3.11 mi13541-6983753-4573753-45715573(Top 55%)4949(Top 40%)4949(Top 90%)
Half13.11 mi0.68 mi13497+443729+243729+2412594(Top 44%)3278(Top 27%)3278(Top 60%)
25K15.53 mi2.42 mi13406+913717+123717+1213247(Top 47%)3790(Top 31%)3790(Top 69%)
30K18.64 mi3.11 mi13045+3613579+1383579+13811730(Top 41%)3154(Top 26%)3154(Top 58%)
20M20.00 mi1.36 mi12949+963552+273552+2712013(Top 42%)3446(Top 28%)3446(Top 63%)
21M21.00 mi1.00 mi12669+2803430+1223430+1229053(Top 32%)2196(Top 18%)2196(Top 40%)
35K21.75 mi0.75 mi12464+2053345+853345+857801(Top 27%)1624(Top 13%)1624(Top 30%)
23M23.00 mi1.25 mi12190+2743233+1123233+1128534(Top 30%)2065(Top 17%)2065(Top 38%)
24M24.00 mi1.00 mi12016+1743183+503183+508830(Top 31%)2256(Top 18%)2256(Top 41%)
40K24.85 mi0.85 mi11928+883178+53178+510456(Top 37%)3156(Top 26%)3156(Top 58%)
25.2M25.20 mi0.35 mi11897+313171+73171+710667(Top 38%)3323(Top 27%)3323(Top 61%)
Finish26.22 mi1.02 mi11850+473179-83179-811344(Top 40%)3630(Top 30%)3630(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12578

Females

3205

F18-39

3205

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12704

Females

3200

F18-39

3200

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12578

Females

3205

F18-39

3205

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15573

Females

4949

F18-39

4949

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12594

Females

3278

F18-39

3278

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13247

Females

3790

F18-39

3790

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11730

Females

3154

F18-39

3154

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

12013

Females

3446

F18-39

3446

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

9053

Females

2196

F18-39

2196

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7801

Females

1624

F18-39

1624

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8534

Females

2065

F18-39

2065

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8830

Females

2256

F18-39

2256

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10456

Females

3156

F18-39

3156

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10667

Females

3323

F18-39

3323

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11344

Females

3630

F18-39

3630

Passing Analysis

Category:
Athletes Passed
2953
Passed By
1412
Net Change
+1541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13391
5K → 10K482131+351#13391#13040
10K → 15K319122+197#13040#12843
15K → 20K62760-698#12843#13541
20K → Half5814+44#13541#13497
Half → 25K202111+91#13497#13406
25K → 30K44483+361#13406#13045
30K → 20M16367+96#13045#12949
20M → 21M2833+280#12949#12669
21M → 35K2083+205#12669#12464
35K → 23M2784+274#12464#12190
23M → 24M18814+174#12190#12016
24M → 40K12537+88#12016#11928
40K → 25.2M4817+31#11928#11897
25.2M → Finish9346+47#11897#11850
TOTALS29531412+1541
📊

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