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BOSTON MARATHON 2023

Trillium Chang

Bib: 9539•F

DC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 14%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:21
Rank: #5343
Start → 5K
21:21 | 6:52/mi
10K· 6.21 mi
42:07
Rank: #4786 (+557)
5K → 10K
20:46 | 6:41/mi
15K· 9.32 mi
1:02:50
Rank: #4431 (+355)
10K → 15K
20:43 | 6:40/mi
20K· 12.43 mi
1:23:53
Rank: #4350 (+81)
15K → 20K
21:03 | 6:47/mi
Half· 13.11 mi
1:28:26
Rank: #4336 (+14)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:59
Rank: #4308 (+28)
Half → 25K
16:33 | 6:50/mi
30K· 18.64 mi
2:06:30
Rank: #4183 (+125)
25K → 30K
21:31 | 6:56/mi
20M
2:15:57
Rank: #4135 (+48)
30K → 20M
9:27 | 6:57/mi
21M
2:23:09
Rank: #4020 (+115)
20M → 21M
7:12 | 7:12/mi
35K· 21.75 mi
2:28:08
Rank: #3977 (+43)
21M → 35K
4:59 | 6:40/mi
23M
2:36:51
Rank: #3923 (+54)
35K → 23M
8:43 | 6:58/mi
24M
2:43:35
Rank: #3877 (+46)
23M → 24M
6:44 | 6:44/mi
40K· 24.85 mi
2:49:31
Rank: #3851 (+26)
24M → 40K
5:56 | 6:56/mi
25.2M
2:52:04
Rank: #3831 (+20)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:58:45
Rank: #3763 (+68)
25.2M → Finish
6:41 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:26
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:30:19
Pace6:53 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1421:216:5221:21
6:52
-
10K
6.21 mi11:08:0042:076:4720:46
6:41
-0:11
15K
9.32 mi11:28:431:02:506:4420:43
6:40
-0:01
20K
12.43 mi11:49:461:23:536:4521:03
6:47
+0:07
Half
13.11 mi11:54:191:28:266:454:33
6:40
-0:07
25K
15.53 mi12:10:521:44:596:4516:33
6:50
+0:10
30K
18.64 mi12:32:232:06:306:4721:31
6:56
+0:06
20M
20.00 mi12:41:502:15:576:489:27
6:57
+0:01
21M
21.00 mi12:49:022:23:096:497:12
7:12
+0:15
35K
21.75 mi12:54:012:28:086:494:59
6:40
-0:32
23M
23.00 mi13:02:442:36:516:498:43
6:58
+0:18
24M
24.00 mi13:09:282:43:356:496:44
6:44
-0:14
40K
24.85 mi13:15:242:49:316:495:56
6:56
+0:12
25.2M
25.20 mi13:17:572:52:046:502:33
7:24
+0:28
Finish
26.22 mi13:24:382:58:456:496:41
6:34
-0:50

Checkpoints & Pacing

📈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

6:34 /mi

Average Pace

6:49 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:12

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:47:1421:216:5221:21
6:52
#5343
10K
6.21 mi11:08:0042:076:4720:46
6:41
#4786
15K
9.32 mi11:28:431:02:506:4420:43
6:40
#4431
20K
12.43 mi11:49:461:23:536:4521:03
6:47
#4350
Half
13.11 mi11:54:191:28:266:454:33
6:40
#4336
25K
15.53 mi12:10:521:44:596:4516:33
6:50
#4308
30K
18.64 mi12:32:232:06:306:4721:31
6:56
#4183
20M
20.00 mi12:41:502:15:576:489:27
6:57
#4135
21M
21.00 mi12:49:022:23:096:497:12
7:12
#4020
35K
21.75 mi12:54:012:28:086:494:59
6:40
#3977
23M
23.00 mi13:02:442:36:516:498:43
6:58
#3923
24M
24.00 mi13:09:282:43:356:496:44
6:44
#3877
40K
24.85 mi13:15:242:49:316:495:56
6:56
#3851
25.2M
25.20 mi13:17:572:52:046:502:33
7:24
#3831
Finish
26.22 mi13:24:382:58:456:496:41
6:34
#3763
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi53433973973847(Top 14%)225(Top 2%)225(Top 5%)
10K6.21 mi3.10 mi4786+557329+68329+684209(Top 16%)258(Top 2%)258(Top 5%)
15K9.32 mi3.11 mi4431+355280+49280+493847(Top 14%)225(Top 2%)225(Top 5%)
20K12.43 mi3.11 mi4350+81273+7273+74225(Top 16%)266(Top 2%)266(Top 5%)
Half13.11 mi0.68 mi4336+14272+1272+14141(Top 16%)257(Top 2%)257(Top 5%)
25K15.53 mi2.42 mi4308+28266+6266+64399(Top 17%)295(Top 3%)295(Top 6%)
30K18.64 mi3.11 mi4183+125250+16250+163853(Top 14%)240(Top 2%)240(Top 5%)
20M20.00 mi1.36 mi4135+482502503766(Top 14%)255(Top 2%)255(Top 5%)
21M21.00 mi1.00 mi4020+115242+8242+83142(Top 12%)200(Top 2%)200(Top 4%)
35K21.75 mi0.75 mi3977+43238+4238+43393(Top 13%)236(Top 2%)236(Top 5%)
23M23.00 mi1.25 mi3923+542382383608(Top 14%)264(Top 2%)264(Top 5%)
24M24.00 mi1.00 mi3877+46235+3235+33322(Top 12%)250(Top 2%)250(Top 5%)
40K24.85 mi0.85 mi3851+26232+3232+33563(Top 13%)322(Top 3%)322(Top 7%)
25.2M25.20 mi0.35 mi3831+20231+1231+13464(Top 13%)327(Top 3%)327(Top 7%)
Finish26.22 mi1.02 mi3763+68227+4227+42796(Top 11%)245(Top 2%)245(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3847

Females

225

F18-39

225

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4209

Females

258

F18-39

258

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3847

Females

225

F18-39

225

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4225

Females

266

F18-39

266

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4141

Females

257

F18-39

257

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4399

Females

295

F18-39

295

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3853

Females

240

F18-39

240

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3766

Females

255

F18-39

255

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3142

Females

200

F18-39

200

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3393

Females

236

F18-39

236

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3608

Females

264

F18-39

264

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3322

Females

250

F18-39

250

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3563

Females

322

F18-39

322

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3464

Females

327

F18-39

327

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2796

Females

245

F18-39

245

Passing Analysis

Category:
Athletes Passed
2037
Passed By
457
Net Change
+1580
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5343
5K → 10K59134+557#5343#4786
10K → 15K37419+355#4786#4431
15K → 20K14463+81#4431#4350
20K → Half2410+14#4350#4336
Half → 25K10173+28#4336#4308
25K → 30K17752+125#4308#4183
30K → 20M9143+48#4183#4135
20M → 21M13217+115#4135#4020
21M → 35K6017+43#4020#3977
35K → 23M8531+54#3977#3923
23M → 24M7125+46#3923#3877
24M → 40K6236+26#3877#3851
40K → 25.2M3515+20#3851#3831
25.2M → Finish9022+68#3831#3763
TOTALS2037457+1580
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing