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BOSTON MARATHON 2023

Chunguang Li

Bib: 23272•F

MO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 38%
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
8:41/mi
26:59
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
54:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:59/mi
1:22:20
↑ 67↓ 78
20K· 12.43 mi
9:19/mi
1:51:17
↑ 106↓ 860.1%
Half· 13.11 mi
9:10/mi
1:57:32
↑ 19↓ 370.5%
25K· 15.53 mi
9:28/mi
2:20:29
↑ 66↓ 880.2%
30K· 18.64 mi
9:58/mi
2:51:27
↑ 181↓ 1480.2%
20M
10:04/mi
3:05:08
↑ 64↓ 500.2%
21M
11:06/mi
3:16:14
↑ 106↓ 241.6%
35K· 21.75 mi
9:24/mi
3:23:16
↑ 17↓ 861.7%
23M
9:51/mi
3:35:36
↑ 23↓ 630.6%
24M
9:24/mi
3:45:00
↓ 821.3%
40K· 24.85 mi
9:55/mi
3:53:29
↓ 200.3%
25.2M
10:44/mi
3:57:11
↑ 13↓ 160.2%
Finish· 26.22 mi
9:27/mi
4:06:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:32
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:09:17
Pace9:52 /mi
📊Positive Split: 10.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5126:598:4126:59
8:41
-
10K
6.21 mi11:48:1854:268:4627:27
8:50
+0:09
15K
9.32 mi12:16:121:22:208:5027:54
8:59
+0:09
20K
12.43 mi12:45:091:51:178:5728:57
9:19
+0:20
Half
13.11 mi12:51:241:57:328:586:15
9:10
-0:09
25K
15.53 mi13:14:212:20:299:0322:57
9:28
+0:18
30K
18.64 mi13:45:192:51:279:1230:58
9:58
+0:30
20M
20.00 mi13:59:003:05:089:1513:41
10:04
+0:06
21M
21.00 mi14:10:063:16:149:2111:06
11:06
+1:02
35K
21.75 mi14:17:083:23:169:217:02
9:24
-1:42
23M
23.00 mi14:29:283:35:369:2212:20
9:51
+0:27
24M
24.00 mi14:38:523:45:009:239:24
9:24
-0:27
40K
24.85 mi14:47:213:53:299:248:29
9:55
+0:31
25.2M
25.20 mi14:51:033:57:119:253:42
10:44
+0:49
Finish
26.22 mi15:00:414:06:499:259:38
9:27
-1:17

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

8:41 /mi

Average Pace

9:25 /mi

Slowest Pace

11:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:20

33% of race

Time at Steady Pace

1:24:13

34% of race

Time at Slower Pace

1:20:16

33% of race

Average Pace: 9:25 /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 mi11:20:5126:598:4126:59
8:41
#18796
10K
6.21 mi11:48:1854:268:4627:27
8:50
#19466
15K
9.32 mi12:16:121:22:208:5027:54
8:59
#19789
20K
12.43 mi12:45:091:51:178:5728:57
9:19
#20136
Half
13.11 mi12:51:241:57:328:586:15
9:10
#20209
25K
15.53 mi13:14:212:20:299:0322:57
9:28
#20337
30K
18.64 mi13:45:192:51:279:1230:58
9:58
#20443
20M
20.00 mi13:59:003:05:089:1513:41
10:04
#20460
21M
21.00 mi14:10:063:16:149:2111:06
11:06
#20489
35K
21.75 mi14:17:083:23:169:217:02
9:24
#20441
23M
23.00 mi14:29:283:35:369:2212:20
9:51
#20379
24M
24.00 mi14:38:523:45:009:239:24
9:24
#20316
40K
24.85 mi14:47:213:53:299:248:29
9:55
#20276
25.2M
25.20 mi14:51:033:57:119:253:42
10:44
#20268
Finish
26.22 mi15:00:414:06:499:259:38
9:27
#20249
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi187967076707620419(Top 77%)7910(Top 69%)7910(Top 1501%)
10K6.21 mi3.10 mi19466-6707443-3677443-36720121(Top 76%)7768(Top 68%)7768(Top 1474%)
15K9.32 mi3.11 mi19789-3237616-1737616-17320419(Top 77%)7910(Top 69%)7910(Top 1501%)
20K12.43 mi3.11 mi20136-3477793-1777793-17721023(Top 79%)8243(Top 72%)8243(Top 1564%)
Half13.11 mi0.68 mi20209-737834-417834-4121051(Top 79%)8275(Top 72%)8275(Top 1570%)
25K15.53 mi2.42 mi20337-1287897-637897-6320735(Top 78%)8124(Top 71%)8124(Top 1542%)
30K18.64 mi3.11 mi20443-1067978-817978-8120940(Top 79%)8311(Top 73%)8311(Top 1577%)
20M20.00 mi1.36 mi20460-177996-187996-1820678(Top 78%)8236(Top 72%)8236(Top 1563%)
21M21.00 mi1.00 mi20489-298027-318027-3121039(Top 79%)8483(Top 74%)8483(Top 1610%)
35K21.75 mi0.75 mi20441+488009+188009+1819569(Top 74%)7694(Top 67%)7694(Top 1460%)
23M23.00 mi1.25 mi20379+627984+257984+2519578(Top 74%)7730(Top 68%)7730(Top 1467%)
24M24.00 mi1.00 mi20316+637956+287956+2818875(Top 71%)7378(Top 65%)7378(Top 1400%)
40K24.85 mi0.85 mi20276+407947+97947+919768(Top 74%)7932(Top 69%)7932(Top 1505%)
25.2M25.20 mi0.35 mi20268+87947794719818(Top 74%)7959(Top 70%)7959(Top 1510%)
Finish26.22 mi1.02 mi20249+197942+57942+519970(Top 75%)7983(Top 70%)7983(Top 1515%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

20419

Females

7910

F60-64

7910

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

20121

Females

7768

F60-64

7768

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

20419

Females

7910

F60-64

7910

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

21023

Females

8243

F60-64

8243

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

21051

Females

8275

F60-64

8275

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20735

Females

8124

F60-64

8124

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

20940

Females

8311

F60-64

8311

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20678

Females

8236

F60-64

8236

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

21039

Females

8483

F60-64

8483

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19569

Females

7694

F60-64

7694

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19578

Females

7730

F60-64

7730

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18875

Females

7378

F60-64

7378

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19768

Females

7932

F60-64

7932

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19818

Females

7959

F60-64

7959

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19970

Females

7983

F60-64

7983

Passing Analysis

Category:
Athletes Passed
985
Passed By
2438
Net Change
-1453
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18796
5K → 10K110780-670#18796#19466
10K → 15K80403-323#19466#19789
15K → 20K83430-347#19789#20136
20K → Half881-73#20136#20209
Half → 25K79207-128#20209#20337
25K → 30K118224-106#20337#20443
30K → 20M6986-17#20443#20460
20M → 21M6190-29#20460#20489
21M → 35K6820+48#20489#20441
35K → 23M10240+62#20441#20379
23M → 24M7613+63#20379#20316
24M → 40K6424+40#20316#20276
40K → 25.2M2214+8#20276#20268
25.2M → Finish4526+19#20268#20249
TOTALS9852438-1453
📊

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