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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Kelsi Chappell

Bib: 2124 •F •Age: N/A

RI

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Top 12%
Gender (Female)
#0 / 12578
Top 1%
Age Group (F18-39)
#0 / 5716
Top 3%
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
18:57
3.11 mi
Rank: #1598
Start → 5K
18:57 | 6:06/mi
10K
37:48
6.21 mi
Rank: #1621 (-23)
5K → 10K
18:51 | 6:05/mi
15K
56:52
9.32 mi
Rank: #1732 (-111)
10K → 15K
19:04 | 6:09/mi
20K
1:16:28
12.43 mi
Rank: #1930 (-198)
15K → 20K
19:36 | 6:19/mi
HALF
1:20:46
13.11 mi
Rank: #1978 (-48)
20K → HALF
4:18 | 6:19/mi
25K
1:37:54
15.53 mi
Rank: #2629 (-651)
HALF → 25K
17:08 | 7:04/mi
30K
1:59:01
18.64 mi
Rank: #2919 (-290)
25K → 30K
21:07 | 6:48/mi
20M
2:08:37
20.00 mi
Rank: #3059 (-140)
30K → 20M
9:36 | 7:05/mi
21M
2:16:12
21.00 mi
Rank: #3224 (-165)
20M → 21M
7:35 | 7:35/mi
35K
2:21:12
21.75 mi
Rank: #3264 (-40)
21M → 35K
5:00 | 6:41/mi
23M
2:29:57
23.00 mi
Rank: #3345 (-81)
35K → 23M
8:45 | 7:00/mi
24M
2:36:37
24.00 mi
Rank: #3335 (+10)
23M → 24M
6:40 | 6:40/mi
40K
2:42:32
24.85 mi
Rank: #3349 (-14)
24M → 40K
5:55 | 6:56/mi
25.2M
2:45:09
25.20 mi
Rank: #3363 (-14)
40K → 25.2M
2:37 | 7:36/mi
FINISH
2:52:06
26.22 mi
Rank: #3427 (-64)
25.2M → FINISH
6:57 | 6:50/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:20:46
Pace6:10 /mi
2nd Half
Distance13.11 mi
Time1:31:20
Pace6:59 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:3218:576:0618:57
6:06
-
10K
6.21 mi10:38:2337:486:0518:51
6:05
-0:01
15K
9.32 mi10:57:2756:526:0719:04
6:09
+0:04
20K
12.43 mi11:17:031:16:286:1019:36
6:19
+0:10
HALF
13.11 mi11:21:211:20:466:104:18
6:19
0:00
25K
15.53 mi11:38:291:37:546:1917:08
7:04
+0:45
30K
18.64 mi11:59:361:59:016:2421:07
6:48
-0:16
20M
20.00 mi12:09:122:08:376:269:36
7:05
+0:17
21M
21.00 mi12:16:472:16:126:307:35
7:35
+0:30
35K
21.75 mi12:21:472:21:126:305:00
6:41
-0:54
23M
23.00 mi12:30:322:29:576:328:45
7:00
+0:19
24M
24.00 mi12:37:122:36:376:326:40
6:40
-0:20
40K
24.85 mi12:43:072:42:326:335:55
6:56
+0:16
25.2M
25.20 mi12:45:442:45:096:342:37
7:36
+0:40
FINISH
26.22 mi12:52:412:52:066:356:57
6:50
-0:46

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

6:05 /mi

Average Pace

6:34 /mi

Slowest Pace

7:36 /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

1:20:46

47% of race

Time at Steady Pace

54:24

32% of race

Time at Slower Pace

36:56

21% of race

Average Pace: 6:34 /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 mi10:19:3218:576:0618:57
6:06
#1598
10K
6.21 mi10:38:2337:486:0518:51
6:05
#1621
15K
9.32 mi10:57:2756:526:0719:04
6:09
#1732
20K
12.43 mi11:17:031:16:286:1019:36
6:19
#1930
HALF
13.11 mi11:21:211:20:466:104:18
6:19
#1978
25K
15.53 mi11:38:291:37:546:1917:08
7:04
#2629
30K
18.64 mi11:59:361:59:016:2421:07
6:48
#2919
20M
20.00 mi12:09:122:08:376:269:36
7:05
#3059
21M
21.00 mi12:16:472:16:126:307:35
7:35
#3224
35K
21.75 mi12:21:472:21:126:305:00
6:41
#3264
23M
23.00 mi12:30:322:29:576:328:45
7:00
#3345
24M
24.00 mi12:37:122:36:376:326:40
6:40
#3335
40K
24.85 mi12:43:072:42:326:335:55
6:56
#3349
25.2M
25.20 mi12:45:442:45:096:342:37
7:36
#3363
FINISH
26.22 mi12:52:412:52:066:356:57
6:50
#3427
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 mi159860601989(Top 7%)67(Top 0.5%)67(Top 1%)
10K6.21 mi3.10 mi1621-2361-161-11667(Top 6%)61(Top 0.5%)61(Top 1%)
15K9.32 mi3.11 mi1732-11160+160+11989(Top 7%)67(Top 0.5%)67(Top 1%)
20K12.43 mi3.11 mi1930-19867-767-72637(Top 9%)99(Top 0.8%)99(Top 2%)
HALF13.11 mi0.68 mi1978-4868-168-13182(Top 11%)121(Top 1.0%)121(Top 2%)
25K15.53 mi2.42 mi2629-65194-2694-267877(Top 27%)1167(Top 9%)1167(Top 20%)
30K18.64 mi3.11 mi2919-290113-19113-194362(Top 15%)333(Top 3%)333(Top 6%)
20M20.00 mi1.36 mi3059-140127-14127-146038(Top 21%)743(Top 6%)743(Top 13%)
21M21.00 mi1.00 mi3224-165138-11138-117049(Top 24%)1209(Top 10%)1209(Top 21%)
35K21.75 mi0.75 mi3264-40143-5143-54862(Top 17%)526(Top 4%)526(Top 9%)
23M23.00 mi1.25 mi3345-81154-11154-115410(Top 19%)701(Top 6%)701(Top 12%)
24M24.00 mi1.00 mi3335+10158-4158-44239(Top 15%)469(Top 4%)469(Top 8%)
40K24.85 mi0.85 mi3349-14161-3161-35028(Top 17%)699(Top 6%)699(Top 12%)
25.2M25.20 mi0.35 mi3363-14170-9170-95793(Top 20%)966(Top 8%)966(Top 17%)
FINISH26.22 mi1.02 mi3427-64184-14184-146277(Top 22%)1200(Top 10%)1200(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21
+97ft-345ft

Overall

1989

Females

67

F18-39

67

5K→10K

3.1 - 6.2 mi

Top 6%
×5
+79ft-138ft

Overall

1667

Females

61

F18-39

61

10K→15K

6.2 - 9.3 mi

Top 7%
×3
+67ft-78ft

Overall

1989

Females

67

F18-39

67

15K→20K

9.3 - 12.4 mi

Top 9%
×5
+106ft-86ft

Overall

2637

Females

99

F18-39

99

20K→HALF

12.4 - 13.1 mi

Top 11%
×2
+19ft-37ft

Overall

3182

Females

121

F18-39

121

HALF→25K

13.1 - 15.5 mi

Top 27%
×4
+66ft-88ft

Overall

7877

Females

1167

F18-39

1167

25K→30K

15.5 - 18.6 mi

Top 15%
×9
+181ft-148ft

Overall

4362

Females

333

F18-39

333

30K→20M

18.6 - 20.0 mi

Top 21%
×5
+64ft-50ft

Overall

6038

Females

743

F18-39

743

20M→21M

20.0 - 21.0 mi

Top 24%
×8
+106ft-24ft

Overall

7049

Females

1209

F18-39

1209

21M→35K

21.0 - 21.8 mi

Top 17%
×7
+17ft-86ft

Overall

4862

Females

526

F18-39

526

35K→23M

21.8 - 23.0 mi

Top 19%
×5
+23ft-63ft

Overall

5410

Females

701

F18-39

701

23M→24M

23.0 - 24.0 mi

Top 15%
×6
+12ft-82ft

Overall

4239

Females

469

F18-39

469

24M→40K

24.0 - 24.9 mi

Top 17%
×1
+6ft-20ft

Overall

5028

Females

699

F18-39

699

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1
+13ft-16ft

Overall

5793

Females

966

F18-39

966

25.2M→FINISH

25.2 - 26.2 mi

Top 22%
×2
+22ft-21ft

Overall

6277

Females

1200

F18-39

1200

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
349
Passed By
1590
Net Change
-1829
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1598
5K → 10K6891-23#1598#1621
10K → 15K20131-111#1621#1732
15K → 20K11200-198#1732#1930
20K → HALF351-48#1930#1978
HALF → 25K4200-651#1978#2629
25K → 30K34200-290#2629#2919
30K → 20M19159-140#2919#3059
20M → 21M14179-165#3059#3224
21M → 35K1656-40#3224#3264
35K → 23M37118-81#3264#3345
23M → 24M3929+10#3345#3335
24M → 40K4357-14#3335#3349
40K → 25.2M1327-14#3349#3363
25.2M → FINISH2892-64#3363#3427
TOTALS3491590-1829
📊

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

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