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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Chelsea Reid

Bib: 14339 •F •Age: N/A

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 37%
Gender (Female)
#0 / 12578
Top 20%
Age Group (F18-39)
#0 / 5716
Top 36%
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
23:08
3.11 mi
Rank: #12331
Start → 5K
23:08 | 7:27/mi
10K
46:25
6.21 mi
Rank: #12580 (-249)
5K → 10K
23:17 | 7:30/mi
15K
1:09:26
9.32 mi
Rank: #12374 (+206)
10K → 15K
23:01 | 7:25/mi
20K
1:32:31
12.43 mi
Rank: #12097 (+277)
15K → 20K
23:05 | 7:26/mi
HALF
1:37:29
13.11 mi
Rank: #12044 (+53)
20K → HALF
4:58 | 7:18/mi
25K
1:55:43
15.53 mi
Rank: #11979 (+65)
HALF → 25K
18:14 | 7:32/mi
30K
2:19:36
18.64 mi
Rank: #11793 (+186)
25K → 30K
23:53 | 7:42/mi
20M
2:29:59
20.00 mi
Rank: #11635 (+158)
30K → 20M
10:23 | 7:39/mi
21M
2:38:02
21.00 mi
Rank: #11524 (+111)
20M → 21M
8:03 | 8:03/mi
35K
2:43:27
21.75 mi
Rank: #11379 (+145)
21M → 35K
5:25 | 7:15/mi
23M
2:52:56
23.00 mi
Rank: #11212 (+167)
35K → 23M
9:29 | 7:35/mi
24M
3:00:21
24.00 mi
Rank: #11108 (+104)
23M → 24M
7:25 | 7:25/mi
40K
3:06:44
24.85 mi
Rank: #10971 (+137)
24M → 40K
6:23 | 7:28/mi
25.2M
3:09:26
25.20 mi
Rank: #10884 (+87)
40K → 25.2M
2:42 | 7:50/mi
FINISH
3:16:29
26.22 mi
Rank: #10709 (+175)
25.2M → FINISH
7:03 | 6:56/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:37:29
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:39:00
Pace7:34 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1023:087:2723:08
7:27
-
10K
6.21 mi11:16:2746:257:2923:17
7:30
+0:03
15K
9.32 mi11:39:281:09:267:2723:01
7:25
-0:05
20K
12.43 mi12:02:331:32:317:2723:05
7:26
+0:01
HALF
13.11 mi12:07:311:37:297:274:58
7:18
-0:08
25K
15.53 mi12:25:451:55:437:2718:14
7:32
+0:14
30K
18.64 mi12:49:382:19:367:3023:53
7:42
+0:10
20M
20.00 mi13:00:012:29:597:3010:23
7:39
-0:03
21M
21.00 mi13:08:042:38:027:328:03
8:03
+0:24
35K
21.75 mi13:13:292:43:277:315:25
7:15
-0:48
23M
23.00 mi13:22:582:52:567:329:29
7:35
+0:20
24M
24.00 mi13:30:233:00:217:317:25
7:25
-0:10
40K
24.85 mi13:36:463:06:447:316:23
7:28
+0:03
25.2M
25.20 mi13:39:283:09:267:322:42
7:50
+0:22
FINISH
26.22 mi13:46:313:16:297:307:03
6:56
-0:54

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

6:56 /mi

Average Pace

7:30 /mi

Slowest Pace

8:03 /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

2:31:28

77% of race

Time at Steady Pace

45:01

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:30 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:53:1023:087:2723:08
7:27
#12331
10K
6.21 mi11:16:2746:257:2923:17
7:30
#12580
15K
9.32 mi11:39:281:09:267:2723:01
7:25
#12374
20K
12.43 mi12:02:331:32:317:2723:05
7:26
#12097
HALF
13.11 mi12:07:311:37:297:274:58
7:18
#12044
25K
15.53 mi12:25:451:55:437:2718:14
7:32
#11979
30K
18.64 mi12:49:382:19:367:3023:53
7:42
#11793
20M
20.00 mi13:00:012:29:597:3010:23
7:39
#11635
21M
21.00 mi13:08:042:38:027:328:03
8:03
#11524
35K
21.75 mi13:13:292:43:277:315:25
7:15
#11379
23M
23.00 mi13:22:582:52:567:329:29
7:35
#11212
24M
24.00 mi13:30:233:00:217:317:25
7:25
#11108
40K
24.85 mi13:36:463:06:447:316:23
7:28
#10971
25.2M
25.20 mi13:39:283:09:267:322:42
7:50
#10884
FINISH
26.22 mi13:46:313:16:297:307:03
6:56
#10709
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 mi123313108310812020(Top 41%)3036(Top 24%)3036(Top 53%)
10K6.21 mi3.10 mi12580-2493269-1613269-16112897(Top 44%)3485(Top 28%)3485(Top 61%)
15K9.32 mi3.11 mi12374+2063170+993170+9912020(Top 41%)3036(Top 24%)3036(Top 53%)
20K12.43 mi3.11 mi12097+2773039+1313039+13111402(Top 39%)2787(Top 22%)2787(Top 49%)
HALF13.11 mi0.68 mi12044+533012+273012+2711135(Top 38%)2548(Top 20%)2548(Top 45%)
25K15.53 mi2.42 mi11979+653023-113023-1111582(Top 40%)2935(Top 23%)2935(Top 51%)
30K18.64 mi3.11 mi11793+1862969+542969+5411144(Top 38%)2838(Top 23%)2838(Top 50%)
20M20.00 mi1.36 mi11635+1582891+782891+7810198(Top 35%)2497(Top 20%)2497(Top 44%)
21M21.00 mi1.00 mi11524+1112853+382853+3810261(Top 35%)2622(Top 21%)2622(Top 46%)
35K21.75 mi0.75 mi11379+1452787+662787+668922(Top 31%)1998(Top 16%)1998(Top 35%)
23M23.00 mi1.25 mi11212+1672741+462741+469458(Top 33%)2314(Top 18%)2314(Top 40%)
24M24.00 mi1.00 mi11108+1042718+232718+239509(Top 33%)2425(Top 19%)2425(Top 42%)
40K24.85 mi0.85 mi10971+1372675+432675+438658(Top 30%)2110(Top 17%)2110(Top 37%)
25.2M25.20 mi0.35 mi10884+872636+392636+397367(Top 25%)1605(Top 13%)1605(Top 28%)
FINISH26.22 mi1.02 mi10709+1752571+652571+656979(Top 24%)1485(Top 12%)1485(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21
+97ft-345ft

Overall

12020

Females

3036

F18-39

3036

5K→10K

3.1 - 6.2 mi

Top 44%
×5
+79ft-138ft

Overall

12897

Females

3485

F18-39

3485

10K→15K

6.2 - 9.3 mi

Top 41%
×3
+67ft-78ft

Overall

12020

Females

3036

F18-39

3036

15K→20K

9.3 - 12.4 mi

Top 39%
×5
+106ft-86ft

Overall

11402

Females

2787

F18-39

2787

20K→HALF

12.4 - 13.1 mi

Top 38%
×2
+19ft-37ft

Overall

11135

Females

2548

F18-39

2548

HALF→25K

13.1 - 15.5 mi

Top 40%
×4
+66ft-88ft

Overall

11582

Females

2935

F18-39

2935

25K→30K

15.5 - 18.6 mi

Top 38%
×9
+181ft-148ft

Overall

11144

Females

2838

F18-39

2838

30K→20M

18.6 - 20.0 mi

Top 35%
×5
+64ft-50ft

Overall

10198

Females

2497

F18-39

2497

20M→21M

20.0 - 21.0 mi

Top 35%
×8
+106ft-24ft

Overall

10261

Females

2622

F18-39

2622

21M→35K

21.0 - 21.8 mi

Top 31%
×7
+17ft-86ft

Overall

8922

Females

1998

F18-39

1998

35K→23M

21.8 - 23.0 mi

Top 33%
×5
+23ft-63ft

Overall

9458

Females

2314

F18-39

2314

23M→24M

23.0 - 24.0 mi

Top 33%
×6
+12ft-82ft

Overall

9509

Females

2425

F18-39

2425

24M→40K

24.0 - 24.9 mi

Top 30%
×1
+6ft-20ft

Overall

8658

Females

2110

F18-39

2110

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1
+13ft-16ft

Overall

7367

Females

1605

F18-39

1605

25.2M→FINISH

25.2 - 26.2 mi

Top 24%
×2
+22ft-21ft

Overall

6979

Females

1485

F18-39

1485

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2493*
Passed By
664
Net Change
+1622
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12331
5K → 10K158200-249#12331#12580
10K → 15K300*94+206#12580#12374
15K → 20K321*44+277#12374#12097
20K → HALF607+53#12097#12044
HALF → 25K15994+65#12044#11979
25K → 30K267*81+186#11979#11793
30K → 20M18224+158#11793#11635
20M → 21M14736+111#11635#11524
21M → 35K1538+145#11524#11379
35K → 23M19831+167#11379#11212
23M → 24M13329+104#11212#11108
24M → 40K1458+137#11108#10971
40K → 25.2M903+87#10971#10884
25.2M → FINISH1805+175#10884#10709
TOTALS2493*664+1622

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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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