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BOSTON MARATHON 2025

Carolyn Olsen

Bib: 24241•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 41%
Division (F55-59)
#0 / 994
Top 20%
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
8:20/mi
25:53
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
51:41
↑ 79↓ 1380.4%
15K· 9.32 mi
8:23/mi
1:17:45
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:44:27
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:50:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:30/mi
2:10:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:51/mi
2:38:14
↑ 181↓ 1480.2%
20M
8:59/mi
2:50:26
↑ 64↓ 500.2%
21M
9:35/mi
3:00:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:06:31
↑ 17↓ 861.7%
23M
9:01/mi
3:17:48
↑ 23↓ 630.6%
24M
8:45/mi
3:26:33
↓ 821.3%
40K· 24.85 mi
8:52/mi
3:34:08
↓ 200.3%
25.2M
9:31/mi
3:37:25
↑ 13↓ 160.2%
Finish· 26.22 mi
8:31/mi
3:46:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:08
Pace8:24 /mi
2nd Half
Distance13.11 mi
Time1:55:58
Pace8:51 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4525:538:2025:53
8:20
-
10K
6.21 mi11:50:3351:418:1925:48
8:18
-0:02
15K
9.32 mi12:16:371:17:458:2126:04
8:23
+0:05
20K
12.43 mi12:43:191:44:278:2426:42
8:36
+0:13
Half
13.11 mi12:49:001:50:088:245:41
8:20
-0:16
25K
15.53 mi13:09:362:10:448:2520:36
8:30
+0:10
30K
18.64 mi13:37:062:38:148:2927:30
8:51
+0:21
20M
20.00 mi13:49:182:50:268:3112:12
8:59
+0:08
21M
21.00 mi13:58:533:00:018:349:35
9:35
+0:36
35K
21.75 mi14:05:233:06:318:356:30
8:41
-0:54
23M
23.00 mi14:16:403:17:488:3611:17
9:01
+0:20
24M
24.00 mi14:25:253:26:338:368:45
8:45
-0:16
40K
24.85 mi14:33:003:34:088:377:35
8:52
+0:07
25.2M
25.20 mi14:36:173:37:258:383:17
9:31
+0:39
Finish
26.22 mi14:44:583:46:068:388:41
8:31
-1:00

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

8:18 /mi

Average Pace

8:38 /mi

Slowest Pace

9:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:33:14

94% of race

Time at Steady Pace

12:52

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:37 /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 mi11:24:4525:538:2025:53
8:20
#18921
10K
6.21 mi11:50:3351:418:1925:48
8:18
#18734
15K
9.32 mi12:16:371:17:458:2126:04
8:23
#18673
20K
12.43 mi12:43:191:44:278:2426:42
8:36
#18683
Half
13.11 mi12:49:001:50:088:245:41
8:20
#18651
25K
15.53 mi13:09:362:10:448:2520:36
8:30
#18370
30K
18.64 mi13:37:062:38:148:2927:30
8:51
#18030
20M
20.00 mi13:49:182:50:268:3112:12
8:59
#17918
21M
21.00 mi13:58:533:00:018:349:35
9:35
#17839
35K
21.75 mi14:05:233:06:318:356:30
8:41
#17775
23M
23.00 mi14:16:403:17:488:3611:17
9:01
#17670
24M
24.00 mi14:25:253:26:338:368:45
8:45
#17581
40K
24.85 mi14:33:003:34:088:377:35
8:52
#17496
25.2M
25.20 mi14:36:173:37:258:383:17
9:31
#17459
Finish
26.22 mi14:44:583:46:068:388:41
8:31
#17406
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi189216864686418642(Top 66%)6688(Top 55%)6688(Top 673%)
10K6.21 mi3.10 mi18734+1876756+1086756+10818591(Top 65%)6648(Top 54%)6648(Top 669%)
15K9.32 mi3.11 mi18673+616716+406716+4018642(Top 66%)6688(Top 55%)6688(Top 673%)
20K12.43 mi3.11 mi18683-106727-116727-1118813(Top 66%)6800(Top 56%)6800(Top 684%)
Half13.11 mi0.68 mi18651+326707+206707+2018164(Top 64%)6414(Top 52%)6414(Top 645%)
25K15.53 mi2.42 mi18370+2816564+1436564+14317195(Top 61%)5972(Top 49%)5972(Top 601%)
30K18.64 mi3.11 mi18030+3406415+1496415+14916913(Top 60%)5990(Top 49%)5990(Top 603%)
20M20.00 mi1.36 mi17918+1126374+416374+4116693(Top 59%)5971(Top 49%)5971(Top 601%)
21M21.00 mi1.00 mi17839+796341+336341+3316482(Top 58%)5970(Top 49%)5970(Top 601%)
35K21.75 mi0.75 mi17775+646320+216320+2116646(Top 59%)6142(Top 50%)6142(Top 618%)
23M23.00 mi1.25 mi17670+1056313+76313+716348(Top 58%)6085(Top 50%)6085(Top 612%)
24M24.00 mi1.00 mi17581+896295+186295+1816053(Top 57%)5962(Top 49%)5962(Top 600%)
40K24.85 mi0.85 mi17496+856278+176278+1715616(Top 55%)5862(Top 48%)5862(Top 590%)
25.2M25.20 mi0.35 mi17459+376263+156263+1514780(Top 52%)5450(Top 45%)5450(Top 548%)
Finish26.22 mi1.02 mi17406+536260+36260+316379(Top 58%)6239(Top 51%)6239(Top 628%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18642

Females

6688

F55-59

6688

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18591

Females

6648

F55-59

6648

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18642

Females

6688

F55-59

6688

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18813

Females

6800

F55-59

6800

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

18164

Females

6414

F55-59

6414

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

17195

Females

5972

F55-59

5972

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

16913

Females

5990

F55-59

5990

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16693

Females

5971

F55-59

5971

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16482

Females

5970

F55-59

5970

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16646

Females

6142

F55-59

6142

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

16348

Females

6085

F55-59

6085

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

16053

Females

5962

F55-59

5962

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15616

Females

5862

F55-59

5862

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14780

Females

5450

F55-59

5450

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

16379

Females

6239

F55-59

6239

Passing Analysis

Category:
Athletes Passed
2505
Passed By
990
Net Change
+1515
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18921
5K → 10K363176+187#18921#18734
10K → 15K221160+61#18734#18673
15K → 20K194204-10#18673#18683
20K → Half5220+32#18683#18651
Half → 25K31736+281#18651#18370
25K → 30K41676+340#18370#18030
30K → 20M17664+112#18030#17918
20M → 21M13758+79#17918#17839
21M → 35K10238+64#17839#17775
35K → 23M16156+105#17775#17670
23M → 24M12233+89#17670#17581
24M → 40K11126+85#17581#17496
40K → 25.2M458+37#17496#17459
25.2M → Finish8835+53#17459#17406
TOTALS2505990+1515
📊

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