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BOSTON MARATHON 2025

Kelsey Basler

Bib: 28906•F

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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
38:37
Rank: #28323
Start → 5K
38:37 | 12:26/mi
10K· 6.21 mi
1:18:48
Rank: #28331 (-8)
5K → 10K
40:11 | 12:56/mi
15K· 9.32 mi
2:00:29
Rank: #28330 (+1)
10K → 15K
41:41 | 13:25/mi
20K· 12.43 mi
2:43:25
Rank: #28321 (+9)
15K → 20K
42:56 | 13:49/mi
Half· 13.11 mi
2:52:15
Rank: #28318 (+3)
20K → Half
8:50 | 12:57/mi
25K· 15.53 mi
3:26:48
Rank: #28308 (+10)
Half → 25K
34:33 | 14:15/mi
30K· 18.64 mi
4:10:23
Rank: #28255 (+53)
25K → 30K
43:35 | 14:02/mi
20M
4:29:29
Rank: #28232 (+23)
30K → 20M
19:06 | 14:03/mi
21M
4:44:38
Rank: #28207 (+25)
20M → 21M
15:09 | 15:09/mi
35K· 21.75 mi
4:54:34
Rank: #28188 (+19)
21M → 35K
9:56 | 13:17/mi
23M
5:12:03
Rank: #28167 (+21)
35K → 23M
17:29 | 13:58/mi
24M
5:25:23
Rank: #28154 (+13)
23M → 24M
13:20 | 13:20/mi
40K· 24.85 mi
5:36:37
Rank: #28119 (+35)
24M → 40K
11:14 | 13:08/mi
25.2M
5:41:28
Rank: #28112 (+7)
40K → 25.2M
4:51 | 14:04/mi
Finish· 26.22 mi
5:54:08
Rank: #28096 (+16)
25.2M → Finish
12:40 | 12:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:52:15
Pace13:08 /mi
2nd Half
Distance13.11 mi
Time3:01:53
Pace13:52 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:57:0838:3712:2638:37
12:26
-
10K
6.21 mi12:37:191:18:4812:4140:11
12:56
+0:30
15K
9.32 mi13:19:002:00:2912:5641:41
13:25
+0:29
20K
12.43 mi14:01:562:43:2513:0942:56
13:49
+0:24
Half
13.11 mi14:10:462:52:1513:088:50
12:57
-0:52
25K
15.53 mi14:45:193:26:4813:1934:33
14:15
+1:18
30K
18.64 mi15:28:544:10:2313:2643:35
14:02
-0:13
20M
20.00 mi15:48:004:29:2913:2819:06
14:03
+0:01
21M
21.00 mi16:03:094:44:3813:3315:09
15:09
+1:06
35K
21.75 mi16:13:054:54:3413:339:56
13:17
-1:52
23M
23.00 mi16:30:345:12:0313:3417:29
13:58
+0:41
24M
24.00 mi16:43:545:25:2313:3313:20
13:20
-0:38
40K
24.85 mi16:55:085:36:3713:3311:14
13:08
-0:12
25.2M
25.20 mi16:59:595:41:2813:334:51
14:04
+0:56
Finish
26.22 mi17:12:395:54:0813:3112:40
12:26
-1:38

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

12:26 /mi

Average Pace

13:31 /mi

Slowest Pace

15:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:18

28% of race

Time at Steady Pace

1:16:11

22% of race

Time at Slower Pace

2:57:39

50% of race

Average Pace: 13:30 /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 mi11:57:0838:3712:2638:37
12:26
#28323
10K
6.21 mi12:37:191:18:4812:4140:11
12:56
#28331
15K
9.32 mi13:19:002:00:2912:5641:41
13:25
#28330
20K
12.43 mi14:01:562:43:2513:0942:56
13:49
#28321
Half
13.11 mi14:10:462:52:1513:088:50
12:57
#28318
25K
15.53 mi14:45:193:26:4813:1934:33
14:15
#28308
30K
18.64 mi15:28:544:10:2313:2643:35
14:02
#28255
20M
20.00 mi15:48:004:29:2913:2819:06
14:03
#28232
21M
21.00 mi16:03:094:44:3813:3315:09
15:09
#28207
35K
21.75 mi16:13:054:54:3413:339:56
13:17
#28188
23M
23.00 mi16:30:345:12:0313:3417:29
13:58
#28167
24M
24.00 mi16:43:545:25:2313:3313:20
13:20
#28154
40K
24.85 mi16:55:085:36:3713:3311:14
13:08
#28119
25.2M
25.20 mi16:59:595:41:2813:334:51
14:04
#28112
Finish
26.22 mi17:12:395:54:0813:3112:40
12:26
#28096
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28323121761217628284(Top 100%)12163(Top 99%)12163(Top 222%)
10K6.21 mi3.10 mi28331-812180-412180-428310(Top 100%)12174(Top 100%)12174(Top 223%)
15K9.32 mi3.11 mi28330+112182-212182-228284(Top 100%)12163(Top 99%)12163(Top 222%)
20K12.43 mi3.11 mi28321+912179+312179+328184(Top 99%)12112(Top 99%)12112(Top 221%)
Half13.11 mi0.68 mi28318+3121791217927982(Top 99%)11996(Top 98%)11996(Top 219%)
25K15.53 mi2.42 mi28308+1012176+312176+328000(Top 99%)12013(Top 98%)12013(Top 220%)
30K18.64 mi3.11 mi28255+5312150+2612150+2627535(Top 97%)11798(Top 96%)11798(Top 216%)
20M20.00 mi1.36 mi28232+2312134+1612134+1627337(Top 96%)11731(Top 96%)11731(Top 214%)
21M21.00 mi1.00 mi28207+2512121+1312121+1327271(Top 96%)11713(Top 96%)11713(Top 214%)
35K21.75 mi0.75 mi28188+1912113+812113+827189(Top 96%)11688(Top 96%)11688(Top 214%)
23M23.00 mi1.25 mi28167+2112105+812105+827291(Top 96%)11754(Top 96%)11754(Top 215%)
24M24.00 mi1.00 mi28154+1312098+712098+727177(Top 96%)11735(Top 96%)11735(Top 215%)
40K24.85 mi0.85 mi28119+3512082+1612082+1626418(Top 93%)11344(Top 93%)11344(Top 207%)
25.2M25.20 mi0.35 mi28112+712079+312079+326340(Top 93%)11361(Top 93%)11361(Top 208%)
Finish26.22 mi1.02 mi28096+1612073+612073+627233(Top 96%)11735(Top 96%)11735(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 100%
×21stories
+97ft-345ft

Overall

28284

Females

12163

F18-39

12163

5K→10K

3.1 - 6.2 mi

Top 100%
×5stories
+79ft-138ft

Overall

28310

Females

12174

F18-39

12174

10K→15K

6.2 - 9.3 mi

Top 100%
×3stories
+67ft-78ft

Overall

28284

Females

12163

F18-39

12163

15K→20K

9.3 - 12.4 mi

Top 99%
×5stories
+106ft-86ft

Overall

28184

Females

12112

F18-39

12112

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

27982

Females

11996

F18-39

11996

Half→25K

13.1 - 15.5 mi

Top 99%
×4stories
+66ft-88ft

Overall

28000

Females

12013

F18-39

12013

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

27535

Females

11798

F18-39

11798

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

27337

Females

11731

F18-39

11731

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

27271

Females

11713

F18-39

11713

21M→35K

21.0 - 21.8 mi

Top 96%
×7stories
+17ft-86ft

Overall

27189

Females

11688

F18-39

11688

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

27291

Females

11754

F18-39

11754

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

27177

Females

11735

F18-39

11735

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26418

Females

11344

F18-39

11344

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26340

Females

11361

F18-39

11361

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

27233

Females

11735

F18-39

11735

Passing Analysis

Category:
Athletes Passed
292
Passed By
65
Net Change
+227
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28323
5K → 10K1725-8#28323#28331
10K → 15K1413+1#28331#28330
15K → 20K178+9#28330#28321
20K → Half41+3#28321#28318
Half → 25K177+10#28318#28308
25K → 30K552+53#28308#28255
30K → 20M263+23#28255#28232
20M → 21M261+25#28232#28207
21M → 35K201+19#28207#28188
35K → 23M221+21#28188#28167
23M → 24M152+13#28167#28154
24M → 40K350+35#28154#28119
40K → 25.2M70+7#28119#28112
25.2M → Finish171+16#28112#28096
TOTALS29265+227
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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