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BOSTON MARATHON 2023

Hongtao Liu

CA

Bib: 21324 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
8:41/mi
27:00
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:43/mi
54:05
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:54/mi
1:21:45
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:11/mi
1:50:18
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:08/mi
1:56:32
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:21/mi
2:19:11
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:38/mi
2:49:08
↑ 181↓ 1480.2%
138 ft elev
20M
9:41/mi
3:02:18
↑ 64↓ 500.2%
148 ft elev
21M
10:26/mi
3:12:44
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:05/mi
3:19:32
↑ 17↓ 861.7%
156 ft elev
23M
9:29/mi
3:31:24
↑ 23↓ 630.6%
116 ft elev
24M
9:11/mi
3:40:35
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:19/mi
3:48:33
↓ 200.3%
20 ft elev
25.2M
9:52/mi
3:51:57
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:06/mi
4:01:13
↑ 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
Time1:56:32
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:04:41
Pace9:31 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4927:008:4127:00
8:41
-
10K
6.21 mi11:46:5454:058:4227:05
8:43
+0:02
15K
9.32 mi12:14:341:21:458:4627:40
8:54
+0:11
20K
12.43 mi12:43:071:50:188:5328:33
9:11
+0:17
Half
13.11 mi12:49:211:56:328:536:14
9:08
-0:03
25K
15.53 mi13:12:002:19:118:5822:39
9:21
+0:13
30K
18.64 mi13:41:572:49:089:0429:57
9:38
+0:17
20M
20.00 mi13:55:073:02:189:0713:10
9:41
+0:03
21M
21.00 mi14:05:333:12:449:1110:26
10:26
+0:45
35K
21.75 mi14:12:213:19:329:106:48
9:05
-1:21
23M
23.00 mi14:24:133:31:249:1111:52
9:29
+0:24
24M
24.00 mi14:33:243:40:359:119:11
9:11
-0:18
40K
24.85 mi14:41:223:48:339:127:58
9:19
+0:08
25.2M
25.20 mi14:44:463:51:579:123:24
9:52
+0:33
Finish
26.22 mi14:54:024:01:139:129:16
9:06
-0:46

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

9:12 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:45

34% of race

Time at Steady Pace

1:30:39

38% of race

Time at Slower Pace

1:08:49

29% of race

Average Pace: 9:12 /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 mi11:19:4927:008:4127:00
8:41
#18823
10K
6.21 mi11:46:5454:058:4227:05
8:43
#19126
15K
9.32 mi12:14:341:21:458:4627:40
8:54
#19449
20K
12.43 mi12:43:071:50:188:5328:33
9:11
#19734
Half
13.11 mi12:49:211:56:328:536:14
9:08
#19804
25K
15.53 mi13:12:002:19:118:5822:39
9:21
#19936
30K
18.64 mi13:41:572:49:089:0429:57
9:38
#19936
20M
20.00 mi13:55:073:02:189:0713:10
9:41
#19881
21M
21.00 mi14:05:333:12:449:1110:26
10:26
#19854
35K
21.75 mi14:12:213:19:329:106:48
9:05
#19785
23M
23.00 mi14:24:133:31:249:1111:52
9:29
#19710
24M
24.00 mi14:33:243:40:359:119:11
9:11
#19625
40K
24.85 mi14:41:223:48:339:127:58
9:19
#19559
25.2M
25.20 mi14:44:463:51:579:123:24
9:52
#19527
Finish
26.22 mi14:54:024:01:139:129:16
9:06
#19504
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi188237091709120068(Top 75%)7716(Top 68%)7716(Top 425%)
10K6.21 mi3.10 mi19126-3037232-1417232-14119526(Top 73%)7404(Top 65%)7404(Top 407%)
15K9.32 mi3.11 mi19449-3237424-1927424-19220068(Top 75%)7716(Top 68%)7716(Top 425%)
20K12.43 mi3.11 mi19734-2857560-1367560-13620527(Top 77%)7973(Top 70%)7973(Top 439%)
Half13.11 mi0.68 mi19804-707602-427602-4220963(Top 79%)8219(Top 72%)8219(Top 452%)
25K15.53 mi2.42 mi19936-1327678-767678-7620327(Top 76%)7884(Top 69%)7884(Top 434%)
30K18.64 mi3.11 mi199367694-167694-1619941(Top 75%)7732(Top 68%)7732(Top 426%)
20M20.00 mi1.36 mi19881+557672+227672+2219531(Top 73%)7592(Top 66%)7592(Top 418%)
21M21.00 mi1.00 mi19854+277657+157657+1519386(Top 73%)7570(Top 66%)7570(Top 417%)
35K21.75 mi0.75 mi19785+697622+357622+3518309(Top 69%)7010(Top 61%)7010(Top 386%)
23M23.00 mi1.25 mi19710+757590+327590+3218273(Top 69%)7007(Top 61%)7007(Top 386%)
24M24.00 mi1.00 mi19625+857552+387552+3818023(Top 68%)6918(Top 61%)6918(Top 381%)
40K24.85 mi0.85 mi19559+667521+317521+3117639(Top 66%)6769(Top 59%)6769(Top 373%)
25.2M25.20 mi0.35 mi19527+327510+117510+1116893(Top 63%)6384(Top 56%)6384(Top 351%)
Finish26.22 mi1.02 mi19504+237505+57505+518457(Top 69%)7153(Top 63%)7153(Top 394%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

20068

Females

7716

F45-49

7716

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

19526

Females

7404

F45-49

7404

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

20068

Females

7716

F45-49

7716

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20527

Females

7973

F45-49

7973

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

20963

Females

8219

F45-49

8219

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20327

Females

7884

F45-49

7884

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19941

Females

7732

F45-49

7732

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19531

Females

7592

F45-49

7592

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19386

Females

7570

F45-49

7570

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

18309

Females

7010

F45-49

7010

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18273

Females

7007

F45-49

7007

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

18023

Females

6918

F45-49

6918

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17639

Females

6769

F45-49

6769

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16893

Females

6384

F45-49

6384

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18457

Females

7153

F45-49

7153

Passing Analysis

Category:
Athletes Passed
1289
Passed By
1970
Net Change
-681
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18823
5K → 10K214517-303#18823#19126
10K → 15K74397-323#19126#19449
15K → 20K84369-285#19449#19734
20K → Half1080-70#19734#19804
Half → 25K81213-132#19804#19936
25K → 30K1601600#19936#19936
30K → 20M11055+55#19936#19881
20M → 21M9164+27#19881#19854
21M → 35K8415+69#19854#19785
35K → 23M10833+75#19785#19710
23M → 24M9712+85#19710#19625
24M → 40K7812+66#19625#19559
40K → 25.2M397+32#19559#19527
25.2M → Finish5936+23#19527#19504
TOTALS12891970-681
📊

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