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BOSTON MARATHON 2026

Renee Chang

Bib: 15848•F

CA

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 45%
Gender (Female)
#0 / 12578
Top 30%
Age Group (F18-39)
#0 / 5716
Top 50%
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
24:30
3.11 mi
Rank: #16086
Start → 5K
24:30 | 7:54/mi
10K
48:44
6.21 mi
Rank: #15846 (+240)
5K → 10K
24:14 | 7:48/mi
15K
1:12:56
9.32 mi
Rank: #15630 (+216)
10K → 15K
24:12 | 7:48/mi
20K
1:37:14
12.43 mi
Rank: #15367 (+263)
15K → 20K
24:18 | 7:50/mi
HALF
1:42:23
13.11 mi
Rank: #15268 (+99)
20K → HALF
5:09 | 7:34/mi
25K
2:01:04
15.53 mi
Rank: #14879 (+389)
HALF → 25K
18:41 | 7:43/mi
30K
2:25:09
18.64 mi
Rank: #14252 (+627)
25K → 30K
24:05 | 7:46/mi
20M
2:35:42
20.00 mi
Rank: #13958 (+294)
30K → 20M
10:33 | 7:47/mi
21M
2:43:54
21.00 mi
Rank: #13782 (+176)
20M → 21M
8:12 | 8:12/mi
35K
2:49:31
21.75 mi
Rank: #13655 (+127)
21M → 35K
5:37 | 7:31/mi
23M
2:59:14
23.00 mi
Rank: #13451 (+204)
35K → 23M
9:43 | 7:46/mi
24M
3:06:53
24.00 mi
Rank: #13323 (+128)
23M → 24M
7:39 | 7:39/mi
40K
3:13:28
24.85 mi
Rank: #13191 (+132)
24M → 40K
6:35 | 7:42/mi
25.2M
3:16:24
25.20 mi
Rank: #13171 (+20)
40K → 25.2M
2:56 | 8:31/mi
FINISH
3:23:53
26.22 mi
Rank: #13031 (+140)
25.2M → FINISH
7:29 | 7:21/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:42:23
Pace7:49 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:41:30
Pace7:45 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1924:307:5424:30
7:54
-
10K
6.21 mi11:20:3348:447:5124:14
7:48
-0:06
15K
9.32 mi11:44:451:12:567:5024:12
7:48
0:00
20K
12.43 mi12:09:031:37:147:5024:18
7:50
+0:02
HALF
13.11 mi12:14:121:42:237:495:09
7:34
-0:16
25K
15.53 mi12:32:532:01:047:4818:41
7:43
+0:09
30K
18.64 mi12:56:582:25:097:4824:05
7:46
+0:03
20M
20.00 mi13:07:312:35:427:4810:33
7:47
+0:01
21M
21.00 mi13:15:432:43:547:498:12
8:12
+0:25
35K
21.75 mi13:21:202:49:317:485:37
7:31
-0:41
23M
23.00 mi13:31:032:59:147:489:43
7:46
+0:15
24M
24.00 mi13:38:423:06:537:487:39
7:39
-0:07
40K
24.85 mi13:45:173:13:287:486:35
7:42
+0:03
25.2M
25.20 mi13:48:133:16:247:482:56
8:31
+0:49
FINISH
26.22 mi13:55:423:23:537:477:29
7:21
-1:10

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

7:21 /mi

Average Pace

7:47 /mi

Slowest Pace

8:31 /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

3:12:45

95% of race

Time at Steady Pace

11:08

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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 mi10:56:1924:307:5424:30
7:54
#16086
10K
6.21 mi11:20:3348:447:5124:14
7:48
#15846
15K
9.32 mi11:44:451:12:567:5024:12
7:48
#15630
20K
12.43 mi12:09:031:37:147:5024:18
7:50
#15367
HALF
13.11 mi12:14:121:42:237:495:09
7:34
#15268
25K
15.53 mi12:32:532:01:047:4818:41
7:43
#14879
30K
18.64 mi12:56:582:25:097:4824:05
7:46
#14252
20M
20.00 mi13:07:312:35:427:4810:33
7:47
#13958
21M
21.00 mi13:15:432:43:547:498:12
8:12
#13782
35K
21.75 mi13:21:202:49:317:485:37
7:31
#13655
23M
23.00 mi13:31:032:59:147:489:43
7:46
#13451
24M
24.00 mi13:38:423:06:537:487:39
7:39
#13323
40K
24.85 mi13:45:173:13:287:486:35
7:42
#13191
25.2M
25.20 mi13:48:133:16:247:482:56
8:31
#13171
FINISH
26.22 mi13:55:423:23:537:477:29
7:21
#13031
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 mi160865371537115261(Top 53%)4899(Top 39%)4899(Top 86%)
10K6.21 mi3.10 mi15846+2405229+1425229+14215641(Top 54%)5098(Top 41%)5098(Top 89%)
15K9.32 mi3.11 mi15630+2165118+1115118+11115261(Top 53%)4899(Top 39%)4899(Top 86%)
20K12.43 mi3.11 mi15367+2634968+1504968+15014701(Top 51%)4614(Top 37%)4614(Top 81%)
HALF13.11 mi0.68 mi15268+994906+624906+6213508(Top 47%)3871(Top 31%)3871(Top 68%)
25K15.53 mi2.42 mi14879+3894671+2354671+23513090(Top 45%)3783(Top 30%)3783(Top 66%)
30K18.64 mi3.11 mi14252+6274357+3144357+31411633(Top 40%)3111(Top 25%)3111(Top 54%)
20M20.00 mi1.36 mi13958+2944202+1554202+15511131(Top 38%)2968(Top 24%)2968(Top 52%)
21M21.00 mi1.00 mi13782+1764129+734129+7311235(Top 39%)3111(Top 25%)3111(Top 54%)
35K21.75 mi0.75 mi13655+1274076+534076+5311005(Top 38%)3018(Top 24%)3018(Top 53%)
23M23.00 mi1.25 mi13451+2043989+873989+8710809(Top 37%)3020(Top 24%)3020(Top 53%)
24M24.00 mi1.00 mi13323+1283942+473942+4711228(Top 39%)3292(Top 26%)3292(Top 58%)
40K24.85 mi0.85 mi13191+1323885+573885+5710374(Top 36%)2948(Top 23%)2948(Top 52%)
25.2M25.20 mi0.35 mi13171+203876+93876+911741(Top 40%)3728(Top 30%)3728(Top 65%)
FINISH26.22 mi1.02 mi13031+1403833+433833+4310257(Top 35%)2979(Top 24%)2979(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21
+97ft-345ft

Overall

15261

Females

4899

F18-39

4899

5K→10K

3.1 - 6.2 mi

Top 54%
×5
+79ft-138ft

Overall

15641

Females

5098

F18-39

5098

10K→15K

6.2 - 9.3 mi

Top 53%
×3
+67ft-78ft

Overall

15261

Females

4899

F18-39

4899

15K→20K

9.3 - 12.4 mi

Top 51%
×5
+106ft-86ft

Overall

14701

Females

4614

F18-39

4614

20K→HALF

12.4 - 13.1 mi

Top 47%
×2
+19ft-37ft

Overall

13508

Females

3871

F18-39

3871

HALF→25K

13.1 - 15.5 mi

Top 45%
×4
+66ft-88ft

Overall

13090

Females

3783

F18-39

3783

25K→30K

15.5 - 18.6 mi

Top 40%
×9
+181ft-148ft

Overall

11633

Females

3111

F18-39

3111

30K→20M

18.6 - 20.0 mi

Top 38%
×5
+64ft-50ft

Overall

11131

Females

2968

F18-39

2968

20M→21M

20.0 - 21.0 mi

Top 39%
×8
+106ft-24ft

Overall

11235

Females

3111

F18-39

3111

21M→35K

21.0 - 21.8 mi

Top 38%
×7
+17ft-86ft

Overall

11005

Females

3018

F18-39

3018

35K→23M

21.8 - 23.0 mi

Top 37%
×5
+23ft-63ft

Overall

10809

Females

3020

F18-39

3020

23M→24M

23.0 - 24.0 mi

Top 39%
×6
+12ft-82ft

Overall

11228

Females

3292

F18-39

3292

24M→40K

24.0 - 24.9 mi

Top 36%
×1
+6ft-20ft

Overall

10374

Females

2948

F18-39

2948

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1
+13ft-16ft

Overall

11741

Females

3728

F18-39

3728

25.2M→FINISH

25.2 - 26.2 mi

Top 35%
×2
+22ft-21ft

Overall

10257

Females

2979

F18-39

2979

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3506
Passed By
451
Net Change
+3055
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16086
5K → 10K413173+240#16086#15846
10K → 15K320104+216#15846#15630
15K → 20K31653+263#15630#15367
20K → HALF1023+99#15367#15268
HALF → 25K40011+389#15268#14879
25K → 30K6369+627#14879#14252
30K → 20M2951+294#14252#13958
20M → 21M19216+176#13958#13782
21M → 35K1336+127#13782#13655
35K → 23M21511+204#13655#13451
23M → 24M14416+128#13451#13323
24M → 40K14917+132#13323#13191
40K → 25.2M3111+20#13191#13171
25.2M → FINISH16020+140#13171#13031
TOTALS3506451+3055
📊

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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Export & Support

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Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing