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BOSTON MARATHON 2023

Rui Zhang

MA

Bib: 21368 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:33/mi
26:34
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:39/mi
53:27
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:44/mi
1:20:34
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:52/mi
1:48:08
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:46/mi
1:54:07
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:56/mi
2:15:46
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:29/mi
2:45:14
↑ 181↓ 1480.2%
138 ft elev
20M
9:37/mi
2:58:18
↑ 64↓ 500.2%
148 ft elev
21M
10:13/mi
3:08:31
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:21/mi
3:15:31
↑ 17↓ 861.7%
156 ft elev
23M
9:36/mi
3:27:32
↑ 23↓ 630.6%
116 ft elev
24M
9:15/mi
3:36:47
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:28/mi
3:44:53
↓ 200.3%
20 ft elev
25.2M
10:26/mi
3:48:29
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:20/mi
3:58:00
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:07
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time2:03:53
Pace9:27 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2126:348:3326:34
8:33
-
10K
6.21 mi11:44:1453:278:3626:53
8:39
+0:06
15K
9.32 mi12:11:211:20:348:3927:07
8:44
+0:05
20K
12.43 mi12:38:551:48:088:4227:34
8:52
+0:08
Half
13.11 mi12:44:541:54:078:425:59
8:46
-0:06
25K
15.53 mi13:06:332:15:468:4421:39
8:56
+0:10
30K
18.64 mi13:36:012:45:148:5229:28
9:29
+0:33
20M
20.00 mi13:49:052:58:188:5513:04
9:37
+0:08
21M
21.00 mi13:59:183:08:318:5910:13
10:13
+0:36
35K
21.75 mi14:06:183:15:318:597:00
9:21
-0:52
23M
23.00 mi14:18:193:27:329:0112:01
9:36
+0:15
24M
24.00 mi14:27:343:36:479:029:15
9:15
-0:21
40K
24.85 mi14:35:403:44:539:038:06
9:28
+0:13
25.2M
25.20 mi14:39:163:48:299:043:36
10:26
+0:58
Finish
26.22 mi14:48:473:58:009:059:31
9:20
-1:06

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

8:33 /mi

Average Pace

9:05 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:46

57% of race

Time at Steady Pace

1:15:21

32% of race

Time at Slower Pace

26:53

11% of race

Average Pace: 9:05 /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 mi11:17:2126:348:3326:34
8:33
#17926
10K
6.21 mi11:44:1453:278:3626:53
8:39
#18535
15K
9.32 mi12:11:211:20:348:3927:07
8:44
#18720
20K
12.43 mi12:38:551:48:088:4227:34
8:52
#18795
Half
13.11 mi12:44:541:54:078:425:59
8:46
#18823
25K
15.53 mi13:06:332:15:468:4421:39
8:56
#18804
30K
18.64 mi13:36:012:45:148:5229:28
9:29
#18911
20M
20.00 mi13:49:052:58:188:5513:04
9:37
#18950
21M
21.00 mi13:59:183:08:318:5910:13
10:13
#18949
35K
21.75 mi14:06:183:15:318:597:00
9:21
#18967
23M
23.00 mi14:18:193:27:329:0112:01
9:36
#18949
24M
24.00 mi14:27:343:36:479:029:15
9:15
#18919
40K
24.85 mi14:35:403:44:539:038:06
9:28
#18896
25.2M
25.20 mi14:39:163:48:299:043:36
10:26
#18904
Finish
26.22 mi14:48:473:58:009:059:31
9:20
#18949
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi17926650465041913571837183
10K6.21 mi3.10 mi18535-6096849-3456849-3451915571767176
15K9.32 mi3.11 mi18720-1856955-1066955-1061913571837183
20K12.43 mi3.11 mi18795-756997-426997-421908871427142
Half13.11 mi0.68 mi18823-287018-217018-211937173047304
25K15.53 mi2.42 mi18804+197013+57013+51861469156915
30K18.64 mi3.11 mi18911-1077085-727085-721937674007400
20M20.00 mi1.36 mi18950-397131-467131-461928674477447
21M21.00 mi1.00 mi18949+17140-97140-91877872107210
35K21.75 mi0.75 mi18967-187158-187158-181938375917591
23M23.00 mi1.25 mi18949+187154+47154+41873672597259
24M24.00 mi1.00 mi18919+307150+47150+41828070487048
40K24.85 mi0.85 mi18896+237142+87142+81826370837083
25.2M25.20 mi0.35 mi18904-87152-107152-101892874697469
Finish26.22 mi1.02 mi18949-457183-317183-311953977507750

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19135

Females

7183

F45-49

7183

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19155

Females

7176

F45-49

7176

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19135

Females

7183

F45-49

7183

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

19088

Females

7142

F45-49

7142

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19371

Females

7304

F45-49

7304

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18614

Females

6915

F45-49

6915

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19376

Females

7400

F45-49

7400

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19286

Females

7447

F45-49

7447

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18778

Females

7210

F45-49

7210

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19383

Females

7591

F45-49

7591

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18736

Females

7259

F45-49

7259

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18280

Females

7048

F45-49

7048

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18263

Females

7083

F45-49

7083

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18928

Females

7469

F45-49

7469

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

19539

Females

7750

F45-49

7750

Passing Analysis

Category:
Athletes Passed
1115
Passed By
2138
Net Change
-1023
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17926
5K → 10K120729-609#17926#18535
10K → 15K115300-185#18535#18720
15K → 20K140215-75#18720#18795
20K → Half1947-28#18795#18823
Half → 25K125106+19#18823#18804
25K → 30K140247-107#18804#18911
30K → 20M65104-39#18911#18950
20M → 21M8584+1#18950#18949
21M → 35K3553-18#18949#18967
35K → 23M8264+18#18967#18949
23M → 24M7444+30#18949#18919
24M → 40K6037+23#18919#18896
40K → 25.2M2836-8#18896#18904
25.2M → Finish2772-45#18904#18949
TOTALS11152138-1023

Passing Charts

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