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Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Shelby Walker-Adams

Bib: 31441 •F •Age: N/A

NH

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
Age Group (F45-49)
#0 / 1786
Race Day Weather
51°/41°F
overcast clouds
Personalized for Shelby

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 · 10:48/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
35:22
3.11 mi
Rank: #28428
Start → 5K
35:22 | 11:24/mi
10K
1:09:47
6.21 mi
Rank: #28144 (+284)
5K → 10K
34:25 | 11:05/mi
15K
1:43:27
9.32 mi
Rank: #27844 (+300)
10K → 15K
33:40 | 10:51/mi
20K
2:23:35
12.43 mi
Rank: #28135 (-291)
15K → 20K
40:08 | 12:56/mi
HALF
2:30:57
13.11 mi
Rank: #28101 (+34)
20K → HALF
7:22 | 10:49/mi
25K
2:58:12
15.53 mi
Rank: #27905 (+196)
HALF → 25K
27:15 | 11:15/mi
30K
3:37:30
18.64 mi
Rank: #27823 (+82)
25K → 30K
39:18 | 12:39/mi
20M
3:57:56
20.00 mi
Rank: #27928 (-105)
30K → 20M
20:26 | 15:03/mi
21M
4:11:43
21.00 mi
Rank: #27902 (+26)
20M → 21M
13:47 | 13:47/mi
35K
4:21:59
21.75 mi
Rank: #27918 (-16)
21M → 35K
10:16 | 13:44/mi
23M
4:38:59
23.00 mi
Rank: #27924 (-6)
35K → 23M
17:00 | 13:36/mi
24M
4:52:23
24.00 mi
Rank: #27924
23M → 24M
13:24 | 13:24/mi
40K
5:05:07
24.85 mi
Rank: #27963 (-39)
24M → 40K
12:44 | 14:54/mi
25.2M
5:10:11
25.20 mi
Rank: #27966 (-3)
40K → 25.2M
5:04 | 14:42/mi
FINISH
5:22:23
26.22 mi
Rank: #27949 (+17)
25.2M → FINISH
12:12 | 11:59/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:30:57
Pace11:31 /mi
2nd Half
Distance13.11 mi
Time2:51:26
Pace13:05 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:03:3035:2211:2435:22
11:24
-
10K
6.21 mi12:37:551:09:4711:1434:25
11:05
-0:19
15K
9.32 mi13:11:351:43:2711:0633:40
10:51
-0:14
20K
12.43 mi13:51:432:23:3511:3440:08
12:56
+2:05
HALF
13.11 mi13:59:052:30:5711:317:22
10:49
-2:07
25K
15.53 mi14:26:202:58:1211:2927:15
11:15
+0:26
30K
18.64 mi15:05:383:37:3011:4139:18
12:39
+1:24
20M
20.00 mi15:26:043:57:5611:5420:26
15:03
+2:24
21M
21.00 mi15:39:514:11:4312:0013:47
13:47
-1:16
35K
21.75 mi15:50:074:21:5912:0310:16
13:44
-0:03
23M
23.00 mi16:07:074:38:5912:0817:00
13:36
-0:08
24M
24.00 mi16:20:314:52:2312:1113:24
13:24
-0:12
40K
24.85 mi16:33:155:05:0712:1712:44
14:54
+1:30
25.2M
25.20 mi16:38:195:10:1112:195:04
14:42
-0:12
FINISH
26.22 mi16:50:315:22:2312:1912:12
11:59
-2:43

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

10:49 /mi

Average Pace

12:18 /mi

Slowest Pace

15:03 /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

2:30:16

47% of race

Time at Steady Pace

1:49:50

34% of race

Time at Slower Pace

1:02:17

19% of race

Average Pace: 12:18 /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 mi12:03:3035:2211:2435:22
11:24
#28428
10K
6.21 mi12:37:551:09:4711:1434:25
11:05
#28144
15K
9.32 mi13:11:351:43:2711:0633:40
10:51
#27844
20K
12.43 mi13:51:432:23:3511:3440:08
12:56
#28135
HALF
13.11 mi13:59:052:30:5711:317:22
10:49
#28101
25K
15.53 mi14:26:202:58:1211:2927:15
11:15
#27905
30K
18.64 mi15:05:383:37:3011:4139:18
12:39
#27823
20M
20.00 mi15:26:043:57:5611:5420:26
15:03
#27928
21M
21.00 mi15:39:514:11:4312:0013:47
13:47
#27902
35K
21.75 mi15:50:074:21:5912:0310:16
13:44
#27918
23M
23.00 mi16:07:074:38:5912:0817:00
13:36
#27924
24M
24.00 mi16:20:314:52:2312:1113:24
13:24
#27924
40K
24.85 mi16:33:155:05:0712:1712:44
14:54
#27963
25.2M
25.20 mi16:38:195:10:1112:195:04
14:42
#27966
FINISH
26.22 mi16:50:315:22:2312:1912:12
11:59
#27949
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 mi28428121701217027223(Top 94%)11440(Top 91%)11440(Top 641%)
10K6.21 mi3.10 mi28144+28411970+20011970+20027777(Top 96%)11771(Top 94%)11771(Top 659%)
15K9.32 mi3.11 mi27844+30011796+17411796+17427223(Top 94%)11440(Top 91%)11440(Top 641%)
20K12.43 mi3.11 mi28135-29111985-18911985-18928572(Top 98%)12300(Top 98%)12300(Top 689%)
HALF13.11 mi0.68 mi28101+3411967+1811967+1827150(Top 94%)11456(Top 91%)11456(Top 641%)
25K15.53 mi2.42 mi27905+19611849+11811849+11826681(Top 92%)11188(Top 89%)11188(Top 626%)
30K18.64 mi3.11 mi27823+8211822+2711822+2727414(Top 94%)11687(Top 93%)11687(Top 654%)
20M20.00 mi1.36 mi27928-10511887-6511887-6528627(Top 99%)12385(Top 98%)12385(Top 693%)
21M21.00 mi1.00 mi27902+2611870+1711870+1727149(Top 94%)11624(Top 92%)11624(Top 651%)
35K21.75 mi0.75 mi27918-1611882-1211882-1228208(Top 97%)12202(Top 97%)12202(Top 683%)
23M23.00 mi1.25 mi27924-611892-1011892-1027854(Top 96%)11998(Top 95%)11998(Top 672%)
24M24.00 mi1.00 mi2792411901-911901-927957(Top 96%)12092(Top 96%)12092(Top 677%)
40K24.85 mi0.85 mi27963-3911924-2311924-2328402(Top 98%)12318(Top 98%)12318(Top 690%)
25.2M25.20 mi0.35 mi27966-311926-211926-227757(Top 96%)12010(Top 95%)12010(Top 672%)
FINISH26.22 mi1.02 mi27949+1711924+211924+227453(Top 95%)11847(Top 94%)11847(Top 663%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21
+97ft-345ft

Overall

27223

Females

11440

F45-49

11440

5K→10K

3.1 - 6.2 mi

Top 96%
×5
+79ft-138ft

Overall

27777

Females

11771

F45-49

11771

10K→15K

6.2 - 9.3 mi

Top 94%
×3
+67ft-78ft

Overall

27223

Females

11440

F45-49

11440

15K→20K

9.3 - 12.4 mi

Top 98%
×5
+106ft-86ft

Overall

28572

Females

12300

F45-49

12300

20K→HALF

12.4 - 13.1 mi

Top 94%
×2
+19ft-37ft

Overall

27150

Females

11456

F45-49

11456

HALF→25K

13.1 - 15.5 mi

Top 92%
×4
+66ft-88ft

Overall

26681

Females

11188

F45-49

11188

25K→30K

15.5 - 18.6 mi

Top 94%
×9
+181ft-148ft

Overall

27414

Females

11687

F45-49

11687

30K→20M

18.6 - 20.0 mi

Top 99%
×5
+64ft-50ft

Overall

28627

Females

12385

F45-49

12385

20M→21M

20.0 - 21.0 mi

Top 94%
×8
+106ft-24ft

Overall

27149

Females

11624

F45-49

11624

21M→35K

21.0 - 21.8 mi

Top 97%
×7
+17ft-86ft

Overall

28208

Females

12202

F45-49

12202

35K→23M

21.8 - 23.0 mi

Top 96%
×5
+23ft-63ft

Overall

27854

Females

11998

F45-49

11998

23M→24M

23.0 - 24.0 mi

Top 96%
×6
+12ft-82ft

Overall

27957

Females

12092

F45-49

12092

24M→40K

24.0 - 24.9 mi

Top 98%
×1
+6ft-20ft

Overall

28402

Females

12318

F45-49

12318

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1
+13ft-16ft

Overall

27757

Females

12010

F45-49

12010

25.2M→FINISH

25.2 - 26.2 mi

Top 95%
×2
+22ft-21ft

Overall

27453

Females

11847

F45-49

11847

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1112*
Passed By
534
Net Change
+479
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28428
5K → 10K311*27+284#28428#28144
10K → 15K308*8+300#28144#27844
15K → 20K8200-291#27844#28135
20K → HALF395+34#28135#28101
HALF → 25K1971+196#28101#27905
25K → 30K12240+82#27905#27823
30K → 20M6111-105#27823#27928
20M → 21M3610+26#27928#27902
21M → 35K723-16#27902#27918
35K → 23M1925-6#27918#27924
23M → 24M19190#27924#27924
24M → 40K746-39#27924#27963
40K → 25.2M69-3#27963#27966
25.2M → FINISH2710+17#27966#27949
TOTALS1112*534+479

* 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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