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BOSTON MARATHON 2023

Annie Chang

Bib: 27204•F

ON

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:42/mi
30:07
↑ 97↓ 3451.5%
10K· 6.21 mi
9:38/mi
1:00:02
↑ 79↓ 1380.4%
15K· 9.32 mi
9:14/mi
1:28:42
↑ 67↓ 78
20K· 12.43 mi
9:29/mi
1:58:10
↑ 106↓ 860.1%
Half· 13.11 mi
8:54/mi
2:04:14
↑ 19↓ 370.5%
25K· 15.53 mi
9:28/mi
2:27:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:41/mi
2:57:16
↑ 181↓ 1480.2%
20M
10:42/mi
3:11:48
↑ 64↓ 500.2%
21M
10:53/mi
3:22:41
↑ 106↓ 241.6%
35K· 21.75 mi
9:04/mi
3:29:28
↑ 17↓ 861.7%
23M
10:25/mi
3:42:30
↑ 23↓ 630.6%
24M
9:49/mi
3:52:19
↓ 821.3%
40K· 24.85 mi
9:30/mi
4:00:26
↓ 200.3%
25.2M
9:05/mi
4:03:34
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
4:12:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:14
Pace9:29 /mi
2nd Half
Distance13.11 mi
Time2:08:35
Pace9:49 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:1730:079:4230:07
9:42
-
10K
6.21 mi12:17:121:00:029:4029:55
9:38
-0:04
15K
9.32 mi12:45:521:28:429:3128:40
9:14
-0:24
20K
12.43 mi13:15:201:58:109:3129:28
9:29
+0:15
Half
13.11 mi13:21:242:04:149:296:04
8:54
-0:35
25K
15.53 mi13:44:212:27:119:2822:57
9:28
+0:34
30K
18.64 mi14:14:262:57:169:3130:05
9:41
+0:13
20M
20.00 mi14:28:583:11:489:3514:32
10:42
+1:01
21M
21.00 mi14:39:513:22:419:3910:53
10:53
+0:11
35K
21.75 mi14:46:383:29:289:386:47
9:04
-1:49
23M
23.00 mi14:59:403:42:309:4013:02
10:25
+1:21
24M
24.00 mi15:09:293:52:199:419:49
9:49
-0:36
40K
24.85 mi15:17:364:00:269:408:07
9:30
-0:19
25.2M
25.20 mi15:20:444:03:349:403:08
9:05
-0:25
Finish
26.22 mi15:29:594:12:499:399:15
9:05
0:00

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

8:54 /mi

Average Pace

9:39 /mi

Slowest Pace

10:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:14

10% of race

Time at Steady Pace

2:59:19

71% of race

Time at Slower Pace

48:16

19% of race

Average Pace: 9:39 /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 mi11:47:1730:079:4230:07
9:42
#22639
10K
6.21 mi12:17:121:00:029:4029:55
9:38
#22782
15K
9.32 mi12:45:521:28:429:3128:40
9:14
#22370
20K
12.43 mi13:15:201:58:109:3129:28
9:29
#22138
Half
13.11 mi13:21:242:04:149:296:04
8:54
#22032
25K
15.53 mi13:44:212:27:119:2822:57
9:28
#21821
30K
18.64 mi14:14:262:57:169:3130:05
9:41
#21510
20M
20.00 mi14:28:583:11:489:3514:32
10:42
#21567
21M
21.00 mi14:39:513:22:419:3910:53
10:53
#21507
35K
21.75 mi14:46:383:29:289:386:47
9:04
#21397
23M
23.00 mi14:59:403:42:309:4013:02
10:25
#21364
24M
24.00 mi15:09:293:52:199:419:49
9:49
#21304
40K
24.85 mi15:17:364:00:269:408:07
9:30
#21188
25.2M
25.20 mi15:20:444:03:349:403:08
9:05
#21096
Finish
26.22 mi15:29:594:12:499:399:15
9:05
#21003
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi226399204920421400(Top 80%)8451(Top 74%)8451(Top 173%)
10K6.21 mi3.10 mi22782-1439246-429246-4222881(Top 86%)9272(Top 81%)9272(Top 190%)
15K9.32 mi3.11 mi22370+4129028+2189028+21821400(Top 80%)8451(Top 74%)8451(Top 173%)
20K12.43 mi3.11 mi22138+2328905+1238905+12321510(Top 81%)8525(Top 75%)8525(Top 175%)
Half13.11 mi0.68 mi22032+1068845+608845+6019998(Top 75%)7671(Top 67%)7671(Top 157%)
25K15.53 mi2.42 mi21821+2118720+1258720+12520739(Top 78%)8128(Top 71%)8128(Top 166%)
30K18.64 mi3.11 mi21510+3118561+1598561+15920097(Top 75%)7826(Top 69%)7826(Top 160%)
20M20.00 mi1.36 mi21567-578603-428603-4222142(Top 83%)9058(Top 79%)9058(Top 185%)
21M21.00 mi1.00 mi21507+608585+188585+1820567(Top 77%)8223(Top 72%)8223(Top 168%)
35K21.75 mi0.75 mi21397+1108531+548531+5418222(Top 68%)6974(Top 61%)6974(Top 143%)
23M23.00 mi1.25 mi21364+338528+38528+321102(Top 79%)8585(Top 75%)8585(Top 176%)
24M24.00 mi1.00 mi21304+608511+178511+1720304(Top 76%)8157(Top 71%)8157(Top 167%)
40K24.85 mi0.85 mi21188+1168460+518460+5118344(Top 69%)7136(Top 62%)7136(Top 146%)
25.2M25.20 mi0.35 mi21096+928414+468414+4612875(Top 48%)4205(Top 37%)4205(Top 86%)
Finish26.22 mi1.02 mi21003+938376+388376+3818407(Top 69%)7127(Top 62%)7127(Top 146%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21400

Females

8451

F18-39

8451

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22881

Females

9272

F18-39

9272

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21400

Females

8451

F18-39

8451

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21510

Females

8525

F18-39

8525

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

19998

Females

7671

F18-39

7671

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20739

Females

8128

F18-39

8128

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

20097

Females

7826

F18-39

7826

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

22142

Females

9058

F18-39

9058

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20567

Females

8223

F18-39

8223

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18222

Females

6974

F18-39

6974

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

21102

Females

8585

F18-39

8585

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20304

Females

8157

F18-39

8157

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18344

Females

7136

F18-39

7136

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12875

Females

4205

F18-39

4205

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18407

Females

7127

F18-39

7127

Passing Analysis

Category:
Athletes Passed
2268
Passed By
632
Net Change
+1636
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22639
5K → 10K174317-143#22639#22782
10K → 15K43422+412#22782#22370
15K → 20K27139+232#22370#22138
20K → Half1093+106#22138#22032
Half → 25K23120+211#22032#21821
25K → 30K32514+311#21821#21510
30K → 20M46103-57#21510#21567
20M → 21M9434+60#21567#21507
21M → 35K1122+110#21507#21397
35K → 23M7845+33#21397#21364
23M → 24M8020+60#21364#21304
24M → 40K1226+116#21304#21188
40K → 25.2M920+92#21188#21096
25.2M → Finish1007+93#21096#21003
TOTALS2268632+1636
📊

Passing Visuals

Category:
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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