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BOSTON MARATHON 2026

Chia-Yu Lo

Bib: 31211β€’F

MA

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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
51Β°/41Β°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
31:19
3.11 mi
Rank: #26174
Start β†’ 5K
31:19 | 10:05/mi
10K
1:02:52
6.21 mi
Rank: #26198 (-24)
5K β†’ 10K
31:33 | 10:10/mi
15K
1:33:49
9.32 mi
Rank: #25990 (+208)
10K β†’ 15K
30:57 | 9:58/mi
20K
2:05:37
12.43 mi
Rank: #25874 (+116)
15K β†’ 20K
31:48 | 10:15/mi
HALF
2:12:26
13.11 mi
Rank: #25858 (+16)
20K β†’ HALF
6:49 | 10:01/mi
25K
2:37:49
15.53 mi
Rank: #25781 (+77)
HALF β†’ 25K
25:23 | 10:28/mi
30K
3:11:05
18.64 mi
Rank: #25562 (+219)
25K β†’ 30K
33:16 | 10:43/mi
20M
3:25:33
20.00 mi
Rank: #25451 (+111)
30K β†’ 20M
14:28 | 10:40/mi
21M
3:37:23
21.00 mi
Rank: #25417 (+34)
20M β†’ 21M
11:50 | 11:50/mi
35K
3:45:54
21.75 mi
Rank: #25467 (-50)
21M β†’ 35K
8:31 | 11:24/mi
23M
3:58:58
23.00 mi
Rank: #25341 (+126)
35K β†’ 23M
13:04 | 10:27/mi
24M
4:09:24
24.00 mi
Rank: #25269 (+72)
23M β†’ 24M
10:26 | 10:26/mi
40K
4:18:28
24.85 mi
Rank: #25202 (+67)
24M β†’ 40K
9:04 | 10:37/mi
25.2M
4:22:19
25.20 mi
Rank: #25178 (+24)
40K β†’ 25.2M
3:51 | 11:10/mi
FINISH
4:32:30
26.22 mi
Rank: #25125 (+53)
25.2M β†’ FINISH
10:11 | 10:00/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:12:26
Pace10:07 /mi
2nd Half
Distance13.11 mi
Time2:20:04
Pace10:42 /mi
πŸ“ŠPositive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:00:1131:1910:0531:19
10:05
-
10K
6.21 mi12:31:441:02:5210:0831:33
10:10
+0:05
15K
9.32 mi13:02:411:33:4910:0430:57
9:58
-0:12
20K
12.43 mi13:34:292:05:3710:0731:48
10:15
+0:17
HALF
13.11 mi13:41:182:12:2610:076:49
10:01
-0:14
25K
15.53 mi14:06:412:37:4910:1025:23
10:28
+0:27
30K
18.64 mi14:39:573:11:0510:1633:16
10:43
+0:15
20M
20.00 mi14:54:253:25:3310:1714:28
10:40
-0:03
21M
21.00 mi15:06:153:37:2310:2211:50
11:50
+1:10
35K
21.75 mi15:14:463:45:5410:248:31
11:24
-0:26
23M
23.00 mi15:27:503:58:5810:2413:04
10:27
-0:57
24M
24.00 mi15:38:164:09:2410:2410:26
10:26
-0:01
40K
24.85 mi15:47:204:18:2810:249:04
10:37
+0:11
25.2M
25.20 mi15:51:114:22:1910:253:51
11:10
+0:33
FINISH
26.22 mi16:01:224:32:3010:2510:11
10:00
-1:10

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:58 /mi

Average Pace

10:24 /mi

Slowest Pace

11:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

4:08:18

91% of race

Time at Steady Pace

12:22

5% of race

Time at Slower Pace

11:50

4% of race

Average Pace: 10:24 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi12:00:1131:1910:0531:19
10:05
#26174
10K
6.21 mi12:31:441:02:5210:0831:33
10:10
#26198
15K
9.32 mi13:02:411:33:4910:0430:57
9:58
#25990
20K
12.43 mi13:34:292:05:3710:0731:48
10:15
#25874
HALF
13.11 mi13:41:182:12:2610:076:49
10:01
#25858
25K
15.53 mi14:06:412:37:4910:1025:23
10:28
#25781
30K
18.64 mi14:39:573:11:0510:1633:16
10:43
#25562
20M
20.00 mi14:54:253:25:3310:1714:28
10:40
#25451
21M
21.00 mi15:06:153:37:2310:2211:50
11:50
#25417
35K
21.75 mi15:14:463:45:5410:248:31
11:24
#25467
23M
23.00 mi15:27:503:58:5810:2413:04
10:27
#25341
24M
24.00 mi15:38:164:09:2410:2410:26
10:26
#25269
40K
24.85 mi15:47:204:18:2810:249:04
10:37
#25202
25.2M
25.20 mi15:51:114:22:1910:253:51
11:10
#25178
FINISH
26.22 mi16:01:224:32:3010:2510:11
10:00
#25125
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 mi26174107991079925609(Top 88%)10506(Top 84%)10506(Top 588%)
10K6.21 mi3.10 mi26198-2410825-2610825-2626210(Top 90%)10838(Top 86%)10838(Top 607%)
15K9.32 mi3.11 mi25990+20810717+10810717+10825609(Top 88%)10506(Top 84%)10506(Top 588%)
20K12.43 mi3.11 mi25874+11610639+7810639+7825574(Top 88%)10511(Top 84%)10511(Top 589%)
HALF13.11 mi0.68 mi25858+16106391063925708(Top 89%)10603(Top 84%)10603(Top 594%)
25K15.53 mi2.42 mi25781+7710615+2410615+2425383(Top 87%)10452(Top 83%)10452(Top 585%)
30K18.64 mi3.11 mi25562+21910525+9010525+9024740(Top 85%)10241(Top 81%)10241(Top 573%)
20M20.00 mi1.36 mi25451+11110480+4510480+4524190(Top 83%)10011(Top 80%)10011(Top 561%)
21M21.00 mi1.00 mi25417+3410473+710473+724801(Top 85%)10399(Top 83%)10399(Top 582%)
35K21.75 mi0.75 mi25467-5010516-4310516-4325890(Top 89%)10978(Top 87%)10978(Top 615%)
23M23.00 mi1.25 mi25341+12610468+4810468+4823258(Top 80%)9656(Top 77%)9656(Top 541%)
24M24.00 mi1.00 mi25269+7210445+2310445+2323958(Top 83%)10058(Top 80%)10058(Top 563%)
40K24.85 mi0.85 mi25202+6710428+1710428+1723481(Top 81%)9865(Top 78%)9865(Top 552%)
25.2M25.20 mi0.35 mi25178+2410417+1110417+1122814(Top 79%)9517(Top 76%)9517(Top 533%)
FINISH26.22 mi1.02 mi25125+5310394+2310394+2323838(Top 82%)10040(Top 80%)10040(Top 562%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
Γ—21
+97ft-345ft

Overall

25609

Females

10506

F45-49

10506

5K→10K

3.1 - 6.2 mi

Top 90%
Γ—5
+79ft-138ft

Overall

26210

Females

10838

F45-49

10838

10K→15K

6.2 - 9.3 mi

Top 88%
Γ—3
+67ft-78ft

Overall

25609

Females

10506

F45-49

10506

15K→20K

9.3 - 12.4 mi

Top 88%
Γ—5
+106ft-86ft

Overall

25574

Females

10511

F45-49

10511

20K→HALF

12.4 - 13.1 mi

Top 89%
Γ—2
+19ft-37ft

Overall

25708

Females

10603

F45-49

10603

HALF→25K

13.1 - 15.5 mi

Top 87%
Γ—4
+66ft-88ft

Overall

25383

Females

10452

F45-49

10452

25K→30K

15.5 - 18.6 mi

Top 85%
Γ—9
+181ft-148ft

Overall

24740

Females

10241

F45-49

10241

30K→20M

18.6 - 20.0 mi

Top 83%
Γ—5
+64ft-50ft

Overall

24190

Females

10011

F45-49

10011

20M→21M

20.0 - 21.0 mi

Top 85%
Γ—8
+106ft-24ft

Overall

24801

Females

10399

F45-49

10399

21M→35K

21.0 - 21.8 mi

Top 89%
Γ—7
+17ft-86ft

Overall

25890

Females

10978

F45-49

10978

35K→23M

21.8 - 23.0 mi

Top 80%
Γ—5
+23ft-63ft

Overall

23258

Females

9656

F45-49

9656

23M→24M

23.0 - 24.0 mi

Top 83%
Γ—6
+12ft-82ft

Overall

23958

Females

10058

F45-49

10058

24M→40K

24.0 - 24.9 mi

Top 81%
Γ—1
+6ft-20ft

Overall

23481

Females

9865

F45-49

9865

40K→25.2M

24.9 - 25.2 mi

Top 79%
Γ—1
+13ft-16ft

Overall

22814

Females

9517

F45-49

9517

25.2M→FINISH

25.2 - 26.2 mi

Top 82%
Γ—2
+22ft-21ft

Overall

23838

Females

10040

F45-49

10040

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1616
Passed By
567
Net Change
+1049
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#26174
5K β†’ 10K187211-24#26174#26198
10K β†’ 15K23830+208#26198#25990
15K β†’ 20K17559+116#25990#25874
20K β†’ HALF2913+16#25874#25858
HALF β†’ 25K13356+77#25858#25781
25K β†’ 30K25031+219#25781#25562
30K β†’ 20M12514+111#25562#25451
20M β†’ 21M7137+34#25451#25417
21M β†’ 35K1767-50#25417#25467
35K β†’ 23M1337+126#25467#25341
23M β†’ 24M8210+72#25341#25269
24M β†’ 40K7710+67#25269#25202
40K β†’ 25.2M306+24#25202#25178
25.2M β†’ FINISH6916+53#25178#25125
TOTALS1616567+1049

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πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing