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BOSTON MARATHON 2026

Kristen Casselberry

Bib: 27262•F

MA

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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
36:13
3.11 mi
Rank: #28632
Start → 5K
36:13 | 11:40/mi
10K
1:15:16
6.21 mi
Rank: #28777 (-145)
5K → 10K
39:03 | 12:35/mi
15K
1:54:46
9.32 mi
Rank: #28790 (-13)
10K → 15K
39:30 | 12:43/mi
20K
2:35:37
12.43 mi
Rank: #28776 (+14)
15K → 20K
40:51 | 13:09/mi
HALF
2:44:20
13.11 mi
Rank: #28773 (+3)
20K → HALF
8:43 | 12:48/mi
25K
3:16:14
15.53 mi
Rank: #28733 (+40)
HALF → 25K
31:54 | 13:10/mi
30K
3:58:19
18.64 mi
Rank: #28644 (+89)
25K → 30K
42:05 | 13:33/mi
20M
4:17:18
20.00 mi
Rank: #28623 (+21)
30K → 20M
18:59 | 13:59/mi
21M
4:31:58
21.00 mi
Rank: #28597 (+26)
20M → 21M
14:40 | 14:40/mi
35K
4:41:08
21.75 mi
Rank: #28574 (+23)
21M → 35K
9:10 | 12:16/mi
23M
4:58:48
23.00 mi
Rank: #28563 (+11)
35K → 23M
17:40 | 14:08/mi
24M
5:12:28
24.00 mi
Rank: #28562 (+1)
23M → 24M
13:40 | 13:40/mi
40K
5:24:38
24.85 mi
Rank: #28548 (+14)
24M → 40K
12:10 | 14:14/mi
25.2M
5:29:53
25.20 mi
Rank: #28546 (+2)
40K → 25.2M
5:15 | 15:14/mi
FINISH
5:43:38
26.22 mi
Rank: #28560 (-14)
25.2M → FINISH
13:45 | 13:30/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:44:20
Pace12:33 /mi
2nd Half
Distance13.11 mi
Time2:59:18
Pace13:41 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:57:1736:1311:4036:13
11:40
-
10K
6.21 mi12:36:201:15:1612:0739:03
12:35
+0:55
15K
9.32 mi13:15:501:54:4612:1939:30
12:43
+0:08
20K
12.43 mi13:56:412:35:3712:3240:51
13:09
+0:26
HALF
13.11 mi14:05:242:44:2012:338:43
12:48
-0:21
25K
15.53 mi14:37:183:16:1412:3831:54
13:10
+0:22
30K
18.64 mi15:19:233:58:1912:4842:05
13:33
+0:23
20M
20.00 mi15:38:224:17:1812:5218:59
13:59
+0:26
21M
21.00 mi15:53:024:31:5812:5814:40
14:40
+0:41
35K
21.75 mi16:02:124:41:0812:569:10
12:16
-2:24
23M
23.00 mi16:19:524:58:4813:0017:40
14:08
+1:52
24M
24.00 mi16:33:325:12:2813:0213:40
13:40
-0:28
40K
24.85 mi16:45:425:24:3813:0412:10
14:14
+0:34
25.2M
25.20 mi16:50:575:29:5313:065:15
15:14
+1:00
FINISH
26.22 mi17:04:425:43:3813:0713:45
13:30
-1:44

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

11:40 /mi

Average Pace

13:07 /mi

Slowest Pace

15:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:12:39

39% of race

Time at Steady Pace

2:22:15

41% of race

Time at Slower Pace

1:08:44

20% of race

Average Pace: 13:06 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:57:1736:1311:4036:13
11:40
#28632
10K
6.21 mi12:36:201:15:1612:0739:03
12:35
#28777
15K
9.32 mi13:15:501:54:4612:1939:30
12:43
#28790
20K
12.43 mi13:56:412:35:3712:3240:51
13:09
#28776
HALF
13.11 mi14:05:242:44:2012:338:43
12:48
#28773
25K
15.53 mi14:37:183:16:1412:3831:54
13:10
#28733
30K
18.64 mi15:19:233:58:1912:4842:05
13:33
#28644
20M
20.00 mi15:38:224:17:1812:5218:59
13:59
#28623
21M
21.00 mi15:53:024:31:5812:5814:40
14:40
#28597
35K
21.75 mi16:02:124:41:0812:569:10
12:16
#28574
23M
23.00 mi16:19:524:58:4813:0017:40
14:08
#28563
24M
24.00 mi16:33:325:12:2813:0213:40
13:40
#28562
40K
24.85 mi16:45:425:24:3813:0412:10
14:14
#28548
25.2M
25.20 mi16:50:575:29:5313:065:15
15:14
#28546
FINISH
26.22 mi17:04:425:43:3813:0713:45
13:30
#28560
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28632123111231128739(Top 99%)12390(Top 99%)12390(Top 217%)
10K6.21 mi3.10 mi28777-14512414-10312414-10328846(Top 99%)12462(Top 99%)12462(Top 218%)
15K9.32 mi3.11 mi28790-1312417-312417-328739(Top 99%)12390(Top 99%)12390(Top 217%)
20K12.43 mi3.11 mi28776+1412411+612411+628686(Top 99%)12373(Top 98%)12373(Top 216%)
HALF13.11 mi0.68 mi28773+312409+212409+228650(Top 99%)12368(Top 98%)12368(Top 216%)
25K15.53 mi2.42 mi28733+4012385+2412385+2428313(Top 98%)12143(Top 97%)12143(Top 212%)
30K18.64 mi3.11 mi28644+8912331+5412331+5428115(Top 97%)12073(Top 96%)12073(Top 211%)
20M20.00 mi1.36 mi28623+2112324+712324+728107(Top 97%)12104(Top 96%)12104(Top 212%)
21M21.00 mi1.00 mi28597+2612312+1212312+1227862(Top 96%)11995(Top 95%)11995(Top 210%)
35K21.75 mi0.75 mi28574+2312303+912303+927030(Top 93%)11577(Top 92%)11577(Top 203%)
23M23.00 mi1.25 mi28563+1112297+612297+628230(Top 97%)12210(Top 97%)12210(Top 214%)
24M24.00 mi1.00 mi28562+112299-212299-228151(Top 97%)12191(Top 97%)12191(Top 213%)
40K24.85 mi0.85 mi28548+1412290+912290+928063(Top 97%)12145(Top 97%)12145(Top 212%)
25.2M25.20 mi0.35 mi28546+212289+112289+128056(Top 97%)12154(Top 97%)12154(Top 213%)
FINISH26.22 mi1.02 mi28560-1412296-712296-728484(Top 98%)12349(Top 98%)12349(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21
+97ft-345ft

Overall

28739

Females

12390

F18-39

12390

5K→10K

3.1 - 6.2 mi

Top 99%
×5
+79ft-138ft

Overall

28846

Females

12462

F18-39

12462

10K→15K

6.2 - 9.3 mi

Top 99%
×3
+67ft-78ft

Overall

28739

Females

12390

F18-39

12390

15K→20K

9.3 - 12.4 mi

Top 99%
×5
+106ft-86ft

Overall

28686

Females

12373

F18-39

12373

20K→HALF

12.4 - 13.1 mi

Top 99%
×2
+19ft-37ft

Overall

28650

Females

12368

F18-39

12368

HALF→25K

13.1 - 15.5 mi

Top 98%
×4
+66ft-88ft

Overall

28313

Females

12143

F18-39

12143

25K→30K

15.5 - 18.6 mi

Top 97%
×9
+181ft-148ft

Overall

28115

Females

12073

F18-39

12073

30K→20M

18.6 - 20.0 mi

Top 97%
×5
+64ft-50ft

Overall

28107

Females

12104

F18-39

12104

20M→21M

20.0 - 21.0 mi

Top 96%
×8
+106ft-24ft

Overall

27862

Females

11995

F18-39

11995

21M→35K

21.0 - 21.8 mi

Top 93%
×7
+17ft-86ft

Overall

27030

Females

11577

F18-39

11577

35K→23M

21.8 - 23.0 mi

Top 97%
×5
+23ft-63ft

Overall

28230

Females

12210

F18-39

12210

23M→24M

23.0 - 24.0 mi

Top 97%
×6
+12ft-82ft

Overall

28151

Females

12191

F18-39

12191

24M→40K

24.0 - 24.9 mi

Top 97%
×1
+6ft-20ft

Overall

28063

Females

12145

F18-39

12145

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1
+13ft-16ft

Overall

28056

Females

12154

F18-39

12154

25.2M→FINISH

25.2 - 26.2 mi

Top 98%
×2
+22ft-21ft

Overall

28484

Females

12349

F18-39

12349

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
384
Passed By
312
Net Change
+72
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28632
5K → 10K13158-145#28632#28777
10K → 15K3245-13#28777#28790
15K → 20K4228+14#28790#28776
20K → HALF107+3#28776#28773
HALF → 25K488+40#28773#28733
25K → 30K978+89#28733#28644
30K → 20M254+21#28644#28623
20M → 21M326+26#28623#28597
21M → 35K241+23#28597#28574
35K → 23M187+11#28574#28563
23M → 24M1110+1#28563#28562
24M → 40K206+14#28562#28548
40K → 25.2M42+2#28548#28546
25.2M → FINISH822-14#28546#28560
TOTALS384312+72
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing