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BOSTON MARATHON 2023

Chunfang Zhang

ON

Bib: 22060 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
9:32/mi
29:38
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:17/mi
58:29
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:12/mi
1:27:04
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:17/mi
1:55:53
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:10/mi
2:02:08
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:20/mi
2:24:46
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:31/mi
2:54:20
↑ 181↓ 1480.2%
138 ft elev
20M
9:40/mi
3:07:28
↑ 64↓ 500.2%
148 ft elev
21M
10:47/mi
3:18:15
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:09/mi
3:25:06
↑ 17↓ 861.7%
156 ft elev
23M
9:45/mi
3:37:18
↑ 23↓ 630.6%
116 ft elev
24M
9:40/mi
3:46:58
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:44/mi
3:55:17
↓ 200.3%
20 ft elev
25.2M
11:04/mi
3:59:06
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:32/mi
4:08:49
↑ 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
Time2:02:08
Pace9:19 /mi
2nd Half
Distance13.11 mi
Time2:06:41
Pace9:40 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5729:389:3229:38
9:32
-
10K
6.21 mi12:13:4858:299:2528:51
9:17
-0:15
15K
9.32 mi12:42:231:27:049:2028:35
9:12
-0:05
20K
12.43 mi13:11:121:55:539:1928:49
9:17
+0:05
Half
13.11 mi13:17:272:02:089:196:15
9:10
-0:07
25K
15.53 mi13:40:052:24:469:1922:38
9:20
+0:10
30K
18.64 mi14:09:392:54:209:2129:34
9:31
+0:11
20M
20.00 mi14:22:473:07:289:2213:08
9:40
+0:09
21M
21.00 mi14:33:343:18:159:2610:47
10:47
+1:07
35K
21.75 mi14:40:253:25:069:266:51
9:09
-1:38
23M
23.00 mi14:52:373:37:189:2712:12
9:45
+0:36
24M
24.00 mi15:02:173:46:589:279:40
9:40
-0:05
40K
24.85 mi15:10:363:55:179:288:19
9:44
+0:04
25.2M
25.20 mi15:14:253:59:069:293:49
11:04
+1:20
Finish
26.22 mi15:24:084:08:499:309:43
9:32
-1:32

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

9:09 /mi

Average Pace

9:30 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

41:41

17% of race

Time at Steady Pace

3:12:32

77% of race

Time at Slower Pace

14:36

6% of race

Average Pace: 9:29 /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 mi11:44:5729:389:3229:38
9:32
#22216
10K
6.21 mi12:13:4858:299:2528:51
9:17
#22085
15K
9.32 mi12:42:231:27:049:2028:35
9:12
#21816
20K
12.43 mi13:11:121:55:539:1928:49
9:17
#21587
Half
13.11 mi13:17:272:02:089:196:15
9:10
#21557
25K
15.53 mi13:40:052:24:469:1922:38
9:20
#21344
30K
18.64 mi14:09:392:54:209:2129:34
9:31
#21007
20M
20.00 mi14:22:473:07:289:2213:08
9:40
#20875
21M
21.00 mi14:33:343:18:159:2610:47
10:47
#20828
35K
21.75 mi14:40:253:25:069:266:51
9:09
#20737
23M
23.00 mi14:52:373:37:189:2712:12
9:45
#20617
24M
24.00 mi15:02:173:46:589:279:40
9:40
#20584
40K
24.85 mi15:10:363:55:179:288:19
9:44
#20526
25.2M
25.20 mi15:14:253:59:069:293:49
11:04
#20519
Finish
26.22 mi15:24:084:08:499:309:43
9:32
#20510
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi222168985898521308(Top 80%)8404(Top 74%)8404(Top 463%)
10K6.21 mi3.10 mi22085+1318897+888897+8821893(Top 82%)8763(Top 77%)8763(Top 482%)
15K9.32 mi3.11 mi21816+2698735+1628735+16221308(Top 80%)8404(Top 74%)8404(Top 463%)
20K12.43 mi3.11 mi21587+2298603+1328603+13220891(Top 78%)8167(Top 71%)8167(Top 449%)
Half13.11 mi0.68 mi21557+308579+248579+2421053(Top 79%)8277(Top 72%)8277(Top 456%)
25K15.53 mi2.42 mi21344+2138456+1238456+12320316(Top 76%)7877(Top 69%)7877(Top 434%)
30K18.64 mi3.11 mi21007+3378287+1698287+16919496(Top 73%)7471(Top 65%)7471(Top 411%)
20M20.00 mi1.36 mi20875+1328221+668221+6619469(Top 73%)7560(Top 66%)7560(Top 416%)
21M21.00 mi1.00 mi20828+478210+118210+1120345(Top 76%)8113(Top 71%)8113(Top 447%)
35K21.75 mi0.75 mi20737+918170+408170+4018614(Top 70%)7183(Top 63%)7183(Top 395%)
23M23.00 mi1.25 mi20617+1208113+578113+5719250(Top 72%)7558(Top 66%)7558(Top 416%)
24M24.00 mi1.00 mi20584+338111+28111+219793(Top 74%)7864(Top 69%)7864(Top 433%)
40K24.85 mi0.85 mi20526+588090+218090+2119138(Top 72%)7565(Top 66%)7565(Top 416%)
25.2M25.20 mi0.35 mi20519+78083+78083+720626(Top 77%)8387(Top 73%)8387(Top 462%)
Finish26.22 mi1.02 mi20510+98094-118094-1120263(Top 76%)8156(Top 71%)8156(Top 449%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21308

Females

8404

F45-49

8404

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21893

Females

8763

F45-49

8763

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21308

Females

8404

F45-49

8404

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20891

Females

8167

F45-49

8167

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

21053

Females

8277

F45-49

8277

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20316

Females

7877

F45-49

7877

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19496

Females

7471

F45-49

7471

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19469

Females

7560

F45-49

7560

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

20345

Females

8113

F45-49

8113

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

18614

Females

7183

F45-49

7183

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

19250

Females

7558

F45-49

7558

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19793

Females

7864

F45-49

7864

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19138

Females

7565

F45-49

7565

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20626

Females

8387

F45-49

8387

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20263

Females

8156

F45-49

8156

Passing Analysis

Category:
Athletes Passed
2231
Passed By
525
Net Change
+1706
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22216
5K → 10K320189+131#22216#22085
10K → 15K33162+269#22085#21816
15K → 20K26334+229#21816#21587
20K → Half4212+30#21587#21557
Half → 25K23421+213#21557#21344
25K → 30K35518+337#21344#21007
30K → 20M14917+132#21007#20875
20M → 21M8740+47#20875#20828
21M → 35K954+91#20828#20737
35K → 23M13313+120#20737#20617
23M → 24M6532+33#20617#20584
24M → 40K7719+58#20584#20526
40K → 25.2M3023+7#20526#20519
25.2M → Finish5041+9#20519#20510
TOTALS2231525+1706
📊

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