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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Chelsea Rommel

Bib: 10396 •F •Age: N/A

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 20%
Gender (Female)
#0 / 12578
Top 5%
Age Group (F18-39)
#0 / 5716
Top 9%
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
21:02
3.11 mi
Rank: #6591
Start → 5K
21:02 | 6:47/mi
10K
41:47
6.21 mi
Rank: #6157 (+434)
5K → 10K
20:45 | 6:41/mi
15K
1:02:30
9.32 mi
Rank: #5886 (+271)
10K → 15K
20:43 | 6:41/mi
20K
1:23:34
12.43 mi
Rank: #5855 (+31)
15K → 20K
21:04 | 6:47/mi
HALF
1:28:09
13.11 mi
Rank: #5876 (-21)
20K → HALF
4:35 | 6:44/mi
25K
1:45:05
15.53 mi
Rank: #6136 (-260)
HALF → 25K
16:56 | 6:59/mi
30K
2:07:03
18.64 mi
Rank: #6182 (-46)
25K → 30K
21:58 | 7:05/mi
20M
2:16:37
20.00 mi
Rank: #6143 (+39)
30K → 20M
9:34 | 7:03/mi
21M
2:24:16
21.00 mi
Rank: #6231 (-88)
20M → 21M
7:39 | 7:39/mi
35K
2:29:21
21.75 mi
Rank: #6193 (+38)
21M → 35K
5:05 | 6:48/mi
23M
2:38:05
23.00 mi
Rank: #6107 (+86)
35K → 23M
8:44 | 6:59/mi
24M
2:44:51
24.00 mi
Rank: #6024 (+83)
23M → 24M
6:46 | 6:46/mi
40K
2:50:40
24.85 mi
Rank: #5904 (+120)
24M → 40K
5:49 | 6:49/mi
25.2M
2:53:12
25.20 mi
Rank: #5865 (+39)
40K → 25.2M
2:32 | 7:21/mi
FINISH
2:59:47
26.22 mi
Rank: #5782 (+83)
25.2M → FINISH
6:35 | 6:28/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
Time1:28:09
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:31:38
Pace7:00 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:37:5321:026:4721:02
6:47
-
10K
6.21 mi10:58:3841:476:4420:45
6:41
-0:06
15K
9.32 mi11:19:211:02:306:4320:43
6:41
0:00
20K
12.43 mi11:40:251:23:346:4421:04
6:47
+0:06
HALF
13.11 mi11:45:001:28:096:444:35
6:44
-0:03
25K
15.53 mi12:01:561:45:056:4616:56
6:59
+0:15
30K
18.64 mi12:23:542:07:036:4921:58
7:05
+0:06
20M
20.00 mi12:33:282:16:376:509:34
7:03
-0:02
21M
21.00 mi12:41:072:24:166:537:39
7:39
+0:36
35K
21.75 mi12:46:122:29:216:535:05
6:48
-0:51
23M
23.00 mi12:54:562:38:056:538:44
6:59
+0:11
24M
24.00 mi13:01:422:44:516:536:46
6:46
-0:13
40K
24.85 mi13:07:312:50:406:525:49
6:49
+0:03
25.2M
25.20 mi13:10:032:53:126:532:32
7:21
+0:32
FINISH
26.22 mi13:16:382:59:476:526:35
6:28
-0:53

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

6:28 /mi

Average Pace

6:52 /mi

Slowest Pace

7:39 /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

2:49:36

94% of race

Time at Steady Pace

2:32

1% of race

Time at Slower Pace

7:39

4% of race

Average Pace: 6:51 /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 mi10:37:5321:026:4721:02
6:47
#6591
10K
6.21 mi10:58:3841:476:4420:45
6:41
#6157
15K
9.32 mi11:19:211:02:306:4320:43
6:41
#5886
20K
12.43 mi11:40:251:23:346:4421:04
6:47
#5855
HALF
13.11 mi11:45:001:28:096:444:35
6:44
#5876
25K
15.53 mi12:01:561:45:056:4616:56
6:59
#6136
30K
18.64 mi12:23:542:07:036:4921:58
7:05
#6182
20M
20.00 mi12:33:282:16:376:509:34
7:03
#6143
21M
21.00 mi12:41:072:24:166:537:39
7:39
#6231
35K
21.75 mi12:46:122:29:216:535:05
6:48
#6193
23M
23.00 mi12:54:562:38:056:538:44
6:59
#6107
24M
24.00 mi13:01:422:44:516:536:46
6:46
#6024
40K
24.85 mi13:07:312:50:406:525:49
6:49
#5904
25.2M
25.20 mi13:10:032:53:126:532:32
7:21
#5865
FINISH
26.22 mi13:16:382:59:476:526:35
6:28
#5782
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 mi65916546545568(Top 19%)444(Top 4%)444(Top 8%)
10K6.21 mi3.10 mi6157+434555+99555+995768(Top 20%)481(Top 4%)481(Top 8%)
15K9.32 mi3.11 mi5886+271487+68487+685568(Top 19%)444(Top 4%)444(Top 8%)
20K12.43 mi3.11 mi5855+31490-3490-36023(Top 21%)594(Top 5%)594(Top 10%)
HALF13.11 mi0.68 mi5876-21499-9499-96472(Top 22%)664(Top 5%)664(Top 12%)
25K15.53 mi2.42 mi6136-260576-77576-777291(Top 25%)957(Top 8%)957(Top 17%)
30K18.64 mi3.11 mi6182-46626-50626-506455(Top 22%)811(Top 6%)811(Top 14%)
20M20.00 mi1.36 mi6143+39625+1625+15893(Top 20%)712(Top 6%)712(Top 12%)
21M21.00 mi1.00 mi6231-88650-25650-257514(Top 26%)1397(Top 11%)1397(Top 24%)
35K21.75 mi0.75 mi6193+38649+1649+15697(Top 20%)732(Top 6%)732(Top 13%)
23M23.00 mi1.25 mi6107+86640+9640+95340(Top 18%)686(Top 5%)686(Top 12%)
24M24.00 mi1.00 mi6024+83628+12628+124923(Top 17%)627(Top 5%)627(Top 11%)
40K24.85 mi0.85 mi5904+120610+18610+184287(Top 15%)540(Top 4%)540(Top 9%)
25.2M25.20 mi0.35 mi5865+39605+5605+54426(Top 15%)621(Top 5%)621(Top 11%)
FINISH26.22 mi1.02 mi5782+83595+10595+103940(Top 14%)503(Top 4%)503(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21
+97ft-345ft

Overall

5568

Females

444

F18-39

444

5K→10K

3.1 - 6.2 mi

Top 20%
×5
+79ft-138ft

Overall

5768

Females

481

F18-39

481

10K→15K

6.2 - 9.3 mi

Top 19%
×3
+67ft-78ft

Overall

5568

Females

444

F18-39

444

15K→20K

9.3 - 12.4 mi

Top 21%
×5
+106ft-86ft

Overall

6023

Females

594

F18-39

594

20K→HALF

12.4 - 13.1 mi

Top 22%
×2
+19ft-37ft

Overall

6472

Females

664

F18-39

664

HALF→25K

13.1 - 15.5 mi

Top 25%
×4
+66ft-88ft

Overall

7291

Females

957

F18-39

957

25K→30K

15.5 - 18.6 mi

Top 22%
×9
+181ft-148ft

Overall

6455

Females

811

F18-39

811

30K→20M

18.6 - 20.0 mi

Top 20%
×5
+64ft-50ft

Overall

5893

Females

712

F18-39

712

20M→21M

20.0 - 21.0 mi

Top 26%
×8
+106ft-24ft

Overall

7514

Females

1397

F18-39

1397

21M→35K

21.0 - 21.8 mi

Top 20%
×7
+17ft-86ft

Overall

5697

Females

732

F18-39

732

35K→23M

21.8 - 23.0 mi

Top 18%
×5
+23ft-63ft

Overall

5340

Females

686

F18-39

686

23M→24M

23.0 - 24.0 mi

Top 17%
×6
+12ft-82ft

Overall

4923

Females

627

F18-39

627

24M→40K

24.0 - 24.9 mi

Top 15%
×1
+6ft-20ft

Overall

4287

Females

540

F18-39

540

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1
+13ft-16ft

Overall

4426

Females

621

F18-39

621

25.2M→FINISH

25.2 - 26.2 mi

Top 14%
×2
+22ft-21ft

Overall

3940

Females

503

F18-39

503

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1800*
Passed By
877
Net Change
+809
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6591
5K → 10K474*40+434#6591#6157
10K → 15K304*33+271#6157#5886
15K → 20K134103+31#5886#5855
20K → HALF829-21#5855#5876
HALF → 25K54200-260#5876#6136
25K → 30K131177-46#6136#6182
30K → 20M9051+39#6182#6143
20M → 21M42130-88#6143#6231
21M → 35K6022+38#6231#6193
35K → 23M10923+86#6193#6107
23M → 24M10522+83#6107#6024
24M → 40K13414+120#6024#5904
40K → 25.2M5011+39#5904#5865
25.2M → FINISH10522+83#5865#5782
TOTALS1800*877+809

* 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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