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BOSTON MARATHON 2023

Bibo Gao

Bib: 8451•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Female)
#0 / 11423
Top 3%
Masters (Masters Women)
#0 / 6539
Top 0.8%
Division (F40-44)
#0 / 1878
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:24
Rank: #5483
Start → 5K
21:24 | 6:53/mi
10K· 6.21 mi
42:27
Rank: #5236 (+247)
5K → 10K
21:03 | 6:47/mi
15K· 9.32 mi
1:03:36
Rank: #5214 (+22)
10K → 15K
21:09 | 6:48/mi
20K· 12.43 mi
1:24:53
Rank: #5138 (+76)
15K → 20K
21:17 | 6:51/mi
Half· 13.11 mi
1:29:33
Rank: #5173 (-35)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:24
Rank: #5192 (-19)
Half → 25K
16:51 | 6:57/mi
30K· 18.64 mi
2:08:18
Rank: #5031 (+161)
25K → 30K
21:54 | 7:03/mi
20M
2:17:53
Rank: #4950 (+81)
30K → 20M
9:35 | 7:03/mi
21M
2:25:16
Rank: #4854 (+96)
20M → 21M
7:23 | 7:23/mi
35K· 21.75 mi
2:30:12
Rank: #4763 (+91)
21M → 35K
4:56 | 6:36/mi
23M
2:38:49
Rank: #4627 (+136)
35K → 23M
8:37 | 6:53/mi
24M
2:45:35
Rank: #4548 (+79)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:51:28
Rank: #4469 (+79)
24M → 40K
5:53 | 6:53/mi
25.2M
2:54:05
Rank: #4456 (+13)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:01:13
Rank: #4465 (-9)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:33
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:31:40
Pace7:00 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3021:246:5321:24
6:53
-
10K
6.21 mi11:07:3342:276:5021:03
6:47
-0:06
15K
9.32 mi11:28:421:03:366:4921:09
6:48
+0:01
20K
12.43 mi11:49:591:24:536:5021:17
6:51
+0:03
Half
13.11 mi11:54:391:29:336:504:40
6:50
-0:01
25K
15.53 mi12:11:301:46:246:5116:51
6:57
+0:07
30K
18.64 mi12:33:242:08:186:5321:54
7:03
+0:06
20M
20.00 mi12:42:592:17:536:549:35
7:03
0:00
21M
21.00 mi12:50:222:25:166:557:23
7:23
+0:20
35K
21.75 mi12:55:182:30:126:544:56
6:36
-0:47
23M
23.00 mi13:03:552:38:496:548:37
6:53
+0:17
24M
24.00 mi13:10:412:45:356:546:46
6:46
-0:07
40K
24.85 mi13:16:342:51:286:545:53
6:53
+0:07
25.2M
25.20 mi13:19:112:54:056:542:37
7:35
+0:42
Finish
26.22 mi13:26:193:01:136:557:08
7:00
-0:35

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

6:36 /mi

Average Pace

6:55 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:13

94% of race

Time at Steady Pace

10:00

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:46:3021:246:5321:24
6:53
#5483
10K
6.21 mi11:07:3342:276:5021:03
6:47
#5236
15K
9.32 mi11:28:421:03:366:4921:09
6:48
#5214
20K
12.43 mi11:49:591:24:536:5021:17
6:51
#5138
Half
13.11 mi11:54:391:29:336:504:40
6:50
#5173
25K
15.53 mi12:11:301:46:246:5116:51
6:57
#5192
30K
18.64 mi12:33:242:08:186:5321:54
7:03
#5031
20M
20.00 mi12:42:592:17:536:549:35
7:03
#4950
21M
21.00 mi12:50:222:25:166:557:23
7:23
#4854
35K
21.75 mi12:55:182:30:126:544:56
6:36
#4763
23M
23.00 mi13:03:552:38:496:548:37
6:53
#4627
24M
24.00 mi13:10:412:45:356:546:46
6:46
#4548
40K
24.85 mi13:16:342:51:286:545:53
6:53
#4469
25.2M
25.20 mi13:19:112:54:056:542:37
7:35
#4456
Finish
26.22 mi13:26:193:01:136:557:08
7:00
#4465
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi54834154155221(Top 20%)388(Top 3%)388(Top 21%)
10K6.21 mi3.10 mi5236+247384+31384+315075(Top 19%)372(Top 3%)372(Top 20%)
15K9.32 mi3.11 mi5214+22376+8376+85221(Top 20%)388(Top 3%)388(Top 21%)
20K12.43 mi3.11 mi5138+76369+7369+74939(Top 19%)350(Top 3%)350(Top 19%)
Half13.11 mi0.68 mi5173-35370-1370-15664(Top 21%)439(Top 4%)439(Top 23%)
25K15.53 mi2.42 mi5192-19375-5375-55306(Top 20%)410(Top 4%)410(Top 22%)
30K18.64 mi3.11 mi5031+161360+15360+154666(Top 18%)353(Top 3%)353(Top 19%)
20M20.00 mi1.36 mi4950+81352+8352+84364(Top 16%)340(Top 3%)340(Top 18%)
21M21.00 mi1.00 mi4854+96340+12340+124084(Top 15%)322(Top 3%)322(Top 17%)
35K21.75 mi0.75 mi4763+91329+11329+113020(Top 11%)192(Top 2%)192(Top 10%)
23M23.00 mi1.25 mi4627+136320+9320+93148(Top 12%)217(Top 2%)217(Top 12%)
24M24.00 mi1.00 mi4548+79306+14306+143505(Top 13%)278(Top 2%)278(Top 15%)
40K24.85 mi0.85 mi4469+79300+6300+63266(Top 12%)274(Top 2%)274(Top 15%)
25.2M25.20 mi0.35 mi4456+13301-1301-14375(Top 16%)530(Top 5%)530(Top 28%)
Finish26.22 mi1.02 mi4465-9304-3304-35231(Top 20%)791(Top 7%)791(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5221

Females

388

F40-44

388

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5075

Females

372

F40-44

372

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5221

Females

388

F40-44

388

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

4939

Females

350

F40-44

350

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5664

Females

439

F40-44

439

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5306

Females

410

F40-44

410

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4666

Females

353

F40-44

353

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4364

Females

340

F40-44

340

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4084

Females

322

F40-44

322

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3020

Females

192

F40-44

192

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3148

Females

217

F40-44

217

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3505

Females

278

F40-44

278

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3266

Females

274

F40-44

274

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4375

Females

530

F40-44

530

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5231

Females

791

F40-44

791

Passing Analysis

Category:
Athletes Passed
1660
Passed By
642
Net Change
+1018
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5483
5K → 10K352105+247#5483#5236
10K → 15K12098+22#5236#5214
15K → 20K15377+76#5214#5138
20K → Half1045-35#5138#5173
Half → 25K90109-19#5173#5192
25K → 30K21453+161#5192#5031
30K → 20M11433+81#5031#4950
20M → 21M11216+96#4950#4854
21M → 35K1009+91#4854#4763
35K → 23M1459+136#4763#4627
23M → 24M9213+79#4627#4548
24M → 40K867+79#4548#4469
40K → 25.2M2512+13#4469#4456
25.2M → Finish4756-9#4456#4465
TOTALS1660642+1018
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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