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BOSTON MARATHON 2025

Olivia Carlson

Bib: 30685•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

Start
0:00:00
Race begins
5K· 3.11 mi
29:08
Rank: #23834
Start → 5K
29:08 | 9:23/mi
10K· 6.21 mi
57:24
Rank: #23338 (+496)
5K → 10K
28:16 | 9:06/mi
15K· 9.32 mi
1:25:40
Rank: #23066 (+272)
10K → 15K
28:16 | 9:06/mi
20K· 12.43 mi
1:55:02
Rank: #23011 (+55)
15K → 20K
29:22 | 9:27/mi
Half· 13.11 mi
2:01:12
Rank: #22950 (+61)
20K → Half
6:10 | 9:02/mi
25K· 15.53 mi
2:24:22
Rank: #22769 (+181)
Half → 25K
23:10 | 9:33/mi
30K· 18.64 mi
2:57:23
Rank: #22844 (-75)
25K → 30K
33:01 | 10:38/mi
20M
3:11:48
Rank: #22830 (+14)
30K → 20M
14:25 | 10:37/mi
21M
3:23:25
Rank: #22832 (-2)
20M → 21M
11:37 | 11:37/mi
35K· 21.75 mi
3:32:07
Rank: #22953 (-121)
21M → 35K
8:42 | 11:38/mi
23M
3:45:12
Rank: #22866 (+87)
35K → 23M
13:05 | 10:27/mi
24M
3:56:00
Rank: #22889 (-23)
23M → 24M
10:48 | 10:48/mi
40K· 24.85 mi
4:05:12
Rank: #22883 (+6)
24M → 40K
9:12 | 10:46/mi
25.2M
4:09:03
Rank: #22854 (+29)
40K → 25.2M
3:51 | 11:10/mi
Finish· 26.22 mi
4:18:59
Rank: #22826 (+28)
25.2M → Finish
9:56 | 9:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:12
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:17:47
Pace10:31 /mi
📊Positive Split: 13.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3729:089:2329:08
9:23
-
10K
6.21 mi12:17:5357:249:1428:16
9:06
-0:17
15K
9.32 mi12:46:091:25:409:1128:16
9:06
0:00
20K
12.43 mi13:15:311:55:029:1529:22
9:27
+0:21
Half
13.11 mi13:21:412:01:129:156:10
9:02
-0:25
25K
15.53 mi13:44:512:24:229:1823:10
9:33
+0:31
30K
18.64 mi14:17:522:57:239:3133:01
10:38
+1:05
20M
20.00 mi14:32:173:11:489:3514:25
10:37
-0:01
21M
21.00 mi14:43:543:23:259:4111:37
11:37
+1:00
35K
21.75 mi14:52:363:32:079:458:42
11:38
+0:01
23M
23.00 mi15:05:413:45:129:4713:05
10:27
-1:11
24M
24.00 mi15:16:293:56:009:5010:48
10:48
+0:21
40K
24.85 mi15:25:414:05:129:529:12
10:46
-0:02
25.2M
25.20 mi15:29:324:09:039:533:51
11:10
+0:24
Finish
26.22 mi15:39:284:18:599:539:56
9:45
-1:25

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

9:02 /mi

Average Pace

9:53 /mi

Slowest Pace

11:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:18

60% of race

Time at Steady Pace

1:20:31

31% of race

Time at Slower Pace

24:10

9% of race

Average Pace: 9:53 /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 mi11:49:3729:089:2329:08
9:23
#23834
10K
6.21 mi12:17:5357:249:1428:16
9:06
#23338
15K
9.32 mi12:46:091:25:409:1128:16
9:06
#23066
20K
12.43 mi13:15:311:55:029:1529:22
9:27
#23011
Half
13.11 mi13:21:412:01:129:156:10
9:02
#22950
25K
15.53 mi13:44:512:24:229:1823:10
9:33
#22769
30K
18.64 mi14:17:522:57:239:3133:01
10:38
#22844
20M
20.00 mi14:32:173:11:489:3514:25
10:37
#22830
21M
21.00 mi14:43:543:23:259:4111:37
11:37
#22832
35K
21.75 mi14:52:363:32:079:458:42
11:38
#22953
23M
23.00 mi15:05:413:45:129:4713:05
10:27
#22866
24M
24.00 mi15:16:293:56:009:5010:48
10:48
#22889
40K
24.85 mi15:25:414:05:129:529:12
10:46
#22883
25.2M
25.20 mi15:29:324:09:039:533:51
11:10
#22854
Finish
26.22 mi15:39:284:18:599:539:56
9:45
#22826
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi238349608960822460(Top 79%)8809(Top 72%)8809(Top 161%)
10K6.21 mi3.10 mi23338+4969335+2739335+27322821(Top 80%)9033(Top 74%)9033(Top 165%)
15K9.32 mi3.11 mi23066+2729166+1699166+16922460(Top 79%)8809(Top 72%)8809(Top 161%)
20K12.43 mi3.11 mi23011+559136+309136+3022757(Top 80%)9010(Top 74%)9010(Top 165%)
Half13.11 mi0.68 mi22950+619100+369100+3622028(Top 78%)8633(Top 71%)8633(Top 158%)
25K15.53 mi2.42 mi22769+1819015+859015+8522064(Top 78%)8687(Top 71%)8687(Top 159%)
30K18.64 mi3.11 mi22844-759094-799094-7923223(Top 82%)9448(Top 77%)9448(Top 173%)
20M20.00 mi1.36 mi22830+149119-259119-2522732(Top 80%)9272(Top 76%)9272(Top 170%)
21M21.00 mi1.00 mi22832-29140-219140-2122864(Top 80%)9434(Top 77%)9434(Top 172%)
35K21.75 mi0.75 mi22953-1219216-769216-7625315(Top 89%)10748(Top 88%)10748(Top 197%)
23M23.00 mi1.25 mi22866+879190+269190+2621895(Top 77%)9015(Top 74%)9015(Top 165%)
24M24.00 mi1.00 mi22889-239229-399229-3923569(Top 83%)9907(Top 81%)9907(Top 181%)
40K24.85 mi0.85 mi22883+69248-199248-1922601(Top 80%)9502(Top 78%)9502(Top 174%)
25.2M25.20 mi0.35 mi22854+299232+169232+1621169(Top 75%)8752(Top 72%)8752(Top 160%)
Finish26.22 mi1.02 mi22826+289235-39235-322107(Top 78%)9215(Top 75%)9215(Top 168%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22460

Females

8809

F18-39

8809

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22821

Females

9033

F18-39

9033

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22460

Females

8809

F18-39

8809

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22757

Females

9010

F18-39

9010

20K→Half

12.4 - 13.1 mi

Top 78%
×2stories
+19ft-37ft

Overall

22028

Females

8633

F18-39

8633

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22064

Females

8687

F18-39

8687

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23223

Females

9448

F18-39

9448

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

22732

Females

9272

F18-39

9272

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

22864

Females

9434

F18-39

9434

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

25315

Females

10748

F18-39

10748

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

21895

Females

9015

F18-39

9015

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

23569

Females

9907

F18-39

9907

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22601

Females

9502

F18-39

9502

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21169

Females

8752

F18-39

8752

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22107

Females

9215

F18-39

9215

Passing Analysis

Category:
Athletes Passed
2015
Passed By
1007
Net Change
+1008
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23834
5K → 10K56771+496#23834#23338
10K → 15K33967+272#23338#23066
15K → 20K189134+55#23066#23011
20K → Half687+61#23011#22950
Half → 25K23352+181#22950#22769
25K → 30K137212-75#22769#22844
30K → 20M8571+14#22844#22830
20M → 21M6870-2#22830#22832
21M → 35K15136-121#22832#22953
35K → 23M11023+87#22953#22866
23M → 24M5376-23#22866#22889
24M → 40K5448+6#22889#22883
40K → 25.2M367+29#22883#22854
25.2M → Finish6133+28#22854#22826
TOTALS20151007+1008
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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