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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Larissa Rivers

Bib: 18899 •F •Age: N/A

CO

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Top 44%
Age Group (F45-49)
#0 / 1786
Race Day Weather
51°/41°F
overcast clouds
Personalized for Larissa

Your Race Performance Report is ready

See how your race unfolded, where your performance changed, and what to focus on next.

Personalized by MyRace AI
Preview insight
Your pace by distance
Fastest segment · 8:13/mi at mile 13.1

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Potential Focus Areas
One-time purchase · Instant access · Downloadable PDF · Shareable report

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
25:36
3.11 mi
Rank: #18487
Start → 5K
25:36 | 8:15/mi
10K
51:31
6.21 mi
Rank: #18963 (-476)
5K → 10K
25:55 | 8:21/mi
15K
1:18:48
9.32 mi
Rank: #19875 (-912)
10K → 15K
27:17 | 8:47/mi
20K
1:44:37
12.43 mi
Rank: #19456 (+419)
15K → 20K
25:49 | 8:19/mi
HALF
1:50:13
13.11 mi
Rank: #19418 (+38)
20K → HALF
5:36 | 8:13/mi
25K
2:10:40
15.53 mi
Rank: #19220 (+198)
HALF → 25K
20:27 | 8:26/mi
30K
2:37:25
18.64 mi
Rank: #18859 (+361)
25K → 30K
26:45 | 8:37/mi
20M
2:49:12
20.00 mi
Rank: #18732 (+127)
30K → 20M
11:47 | 8:41/mi
21M
2:58:14
21.00 mi
Rank: #18577 (+155)
20M → 21M
9:02 | 9:02/mi
35K
3:04:35
21.75 mi
Rank: #18541 (+36)
21M → 35K
6:21 | 8:30/mi
23M
3:15:28
23.00 mi
Rank: #18436 (+105)
35K → 23M
10:53 | 8:42/mi
24M
3:24:07
24.00 mi
Rank: #18404 (+32)
23M → 24M
8:39 | 8:39/mi
40K
3:31:36
24.85 mi
Rank: #18347 (+57)
24M → 40K
7:29 | 8:46/mi
25.2M
3:34:47
25.20 mi
Rank: #18304 (+43)
40K → 25.2M
3:11 | 9:14/mi
FINISH
3:43:31
26.22 mi
Rank: #18305 (-1)
25.2M → FINISH
8:44 | 8:35/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:50:13
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time1:53:18
Pace8:39 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:08:4725:368:1525:36
8:15
-
10K
6.21 mi11:34:4251:318:1825:55
8:21
+0:06
15K
9.32 mi12:01:591:18:488:2827:17
8:47
+0:26
20K
12.43 mi12:27:481:44:378:2625:49
8:19
-0:28
HALF
13.11 mi12:33:241:50:138:255:36
8:13
-0:06
25K
15.53 mi12:53:512:10:408:2520:27
8:26
+0:13
30K
18.64 mi13:20:362:37:258:2726:45
8:37
+0:11
20M
20.00 mi13:32:232:49:128:2811:47
8:41
+0:04
21M
21.00 mi13:41:252:58:148:309:02
9:02
+0:21
35K
21.75 mi13:47:463:04:358:306:21
8:30
-0:32
23M
23.00 mi13:58:393:15:288:3010:53
8:42
+0:12
24M
24.00 mi14:07:183:24:078:318:39
8:39
-0:03
40K
24.85 mi14:14:473:31:368:317:29
8:46
+0:07
25.2M
25.20 mi14:17:583:34:478:323:11
9:14
+0:28
FINISH
26.22 mi14:26:423:43:318:328:44
8:35
-0:39

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

8:13 /mi

Average Pace

8:32 /mi

Slowest Pace

9:14 /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

3:40:20

99% of race

Time at Steady Pace

3:11

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:31 /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 mi11:08:4725:368:1525:36
8:15
#18487
10K
6.21 mi11:34:4251:318:1825:55
8:21
#18963
15K
9.32 mi12:01:591:18:488:2827:17
8:47
#19875
20K
12.43 mi12:27:481:44:378:2625:49
8:19
#19456
HALF
13.11 mi12:33:241:50:138:255:36
8:13
#19418
25K
15.53 mi12:53:512:10:408:2520:27
8:26
#19220
30K
18.64 mi13:20:362:37:258:2726:45
8:37
#18859
20M
20.00 mi13:32:232:49:128:2811:47
8:41
#18732
21M
21.00 mi13:41:252:58:148:309:02
9:02
#18577
35K
21.75 mi13:47:463:04:358:306:21
8:30
#18541
23M
23.00 mi13:58:393:15:288:3010:53
8:42
#18436
24M
24.00 mi14:07:183:24:078:318:39
8:39
#18404
40K
24.85 mi14:14:473:31:368:317:29
8:46
#18347
25.2M
25.20 mi14:17:583:34:478:323:11
9:14
#18304
FINISH
26.22 mi14:26:423:43:318:328:44
8:35
#18305
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi184876789678921637(Top 75%)8442(Top 67%)8442(Top 473%)
10K6.21 mi3.10 mi18963-4767052-2637052-26319446(Top 67%)7283(Top 58%)7283(Top 408%)
15K9.32 mi3.11 mi19875-9127538-4867538-48621637(Top 75%)8442(Top 67%)8442(Top 473%)
20K12.43 mi3.11 mi19456+4197317+2217317+22118183(Top 63%)6625(Top 53%)6625(Top 371%)
HALF13.11 mi0.68 mi19418+387294+237294+2318540(Top 64%)6789(Top 54%)6789(Top 380%)
25K15.53 mi2.42 mi19220+1987197+977197+9718188(Top 63%)6684(Top 53%)6684(Top 374%)
30K18.64 mi3.11 mi18859+3617029+1687029+16817542(Top 60%)6421(Top 51%)6421(Top 360%)
20M20.00 mi1.36 mi18732+1276970+596970+5917288(Top 60%)6355(Top 51%)6355(Top 356%)
21M21.00 mi1.00 mi18577+1556897+736897+7316328(Top 56%)5886(Top 47%)5886(Top 330%)
35K21.75 mi0.75 mi18541+366882+156882+1517549(Top 60%)6656(Top 53%)6656(Top 373%)
23M23.00 mi1.25 mi18436+1056848+346848+3416907(Top 58%)6383(Top 51%)6383(Top 357%)
24M24.00 mi1.00 mi18404+326852-46852-417778(Top 61%)6878(Top 55%)6878(Top 385%)
40K24.85 mi0.85 mi18347+576836+166836+1617164(Top 59%)6606(Top 53%)6606(Top 370%)
25.2M25.20 mi0.35 mi18304+436822+146822+1416046(Top 55%)6000(Top 48%)6000(Top 336%)
FINISH26.22 mi1.02 mi18305-16835-136835-1318549(Top 64%)7322(Top 58%)7322(Top 410%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21
+97ft-345ft

Overall

21637

Females

8442

F45-49

8442

5K→10K

3.1 - 6.2 mi

Top 67%
×5
+79ft-138ft

Overall

19446

Females

7283

F45-49

7283

10K→15K

6.2 - 9.3 mi

Top 75%
×3
+67ft-78ft

Overall

21637

Females

8442

F45-49

8442

15K→20K

9.3 - 12.4 mi

Top 63%
×5
+106ft-86ft

Overall

18183

Females

6625

F45-49

6625

20K→HALF

12.4 - 13.1 mi

Top 64%
×2
+19ft-37ft

Overall

18540

Females

6789

F45-49

6789

HALF→25K

13.1 - 15.5 mi

Top 63%
×4
+66ft-88ft

Overall

18188

Females

6684

F45-49

6684

25K→30K

15.5 - 18.6 mi

Top 60%
×9
+181ft-148ft

Overall

17542

Females

6421

F45-49

6421

30K→20M

18.6 - 20.0 mi

Top 60%
×5
+64ft-50ft

Overall

17288

Females

6355

F45-49

6355

20M→21M

20.0 - 21.0 mi

Top 56%
×8
+106ft-24ft

Overall

16328

Females

5886

F45-49

5886

21M→35K

21.0 - 21.8 mi

Top 60%
×7
+17ft-86ft

Overall

17549

Females

6656

F45-49

6656

35K→23M

21.8 - 23.0 mi

Top 58%
×5
+23ft-63ft

Overall

16907

Females

6383

F45-49

6383

23M→24M

23.0 - 24.0 mi

Top 61%
×6
+12ft-82ft

Overall

17778

Females

6878

F45-49

6878

24M→40K

24.0 - 24.9 mi

Top 59%
×1
+6ft-20ft

Overall

17164

Females

6606

F45-49

6606

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1
+13ft-16ft

Overall

16046

Females

6000

F45-49

6000

25.2M→FINISH

25.2 - 26.2 mi

Top 64%
×2
+22ft-21ft

Overall

18549

Females

7322

F45-49

7322

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2063*
Passed By
766
Net Change
+182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18487
5K → 10K109200-476#18487#18963
10K → 15K18200-912#18963#19875
15K → 20K440*21+419#19875#19456
20K → HALF5315+38#19456#19418
HALF → 25K221*23+198#19418#19220
25K → 30K401*40+361#19220#18859
30K → 20M15427+127#18859#18732
20M → 21M17318+155#18732#18577
21M → 35K7135+36#18577#18541
35K → 23M13429+105#18541#18436
23M → 24M8755+32#18436#18404
24M → 40K8730+57#18404#18347
40K → 25.2M507+43#18347#18304
25.2M → FINISH6566-1#18304#18305
TOTALS2063*766+182

* 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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