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BOSTON MARATHON 2023

Tibby Xu

Bib: 16534•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 26%
Gender (Female)
#0 / 11423
Top 8%
Division (F18-39)
#0 / 4884
Top 15%
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
7:34/mi
23:32
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
46:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:09:23
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:32:23
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:37:28
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
1:55:47
↑ 66↓ 880.2%
30K· 18.64 mi
7:22/mi
2:18:40
↑ 181↓ 1480.2%
20M
7:16/mi
2:28:33
↑ 64↓ 500.2%
21M
7:33/mi
2:36:06
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:41:20
↑ 17↓ 861.7%
23M
7:07/mi
2:50:15
↑ 23↓ 630.6%
24M
6:45/mi
2:57:00
↓ 821.3%
40K· 24.85 mi
6:45/mi
3:02:46
↓ 200.3%
25.2M
7:24/mi
3:05:19
↑ 13↓ 160.2%
Finish· 26.22 mi
6:42/mi
3:12:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:28
Pace7:26 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:34:41
Pace7:13 /mi
📊Negative Split: 2.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4723:327:3423:32
7:34
-
10K
6.21 mi11:36:4146:267:2822:54
7:22
-0:12
15K
9.32 mi11:59:381:09:237:2722:57
7:23
+0:01
20K
12.43 mi12:22:381:32:237:2623:00
7:24
+0:01
Half
13.11 mi12:27:431:37:287:265:05
7:27
+0:03
25K
15.53 mi12:46:021:55:477:2718:19
7:33
+0:06
30K
18.64 mi13:08:552:18:407:2622:53
7:22
-0:11
20M
20.00 mi13:18:482:28:337:269:53
7:16
-0:06
21M
21.00 mi13:26:212:36:067:267:33
7:33
+0:17
35K
21.75 mi13:31:352:41:207:255:14
7:00
-0:33
23M
23.00 mi13:40:302:50:157:248:55
7:07
+0:07
24M
24.00 mi13:47:152:57:007:236:45
6:45
-0:22
40K
24.85 mi13:53:013:02:467:215:46
6:45
0:00
25.2M
25.20 mi13:55:343:05:197:212:33
7:24
+0:39
Finish
26.22 mi14:02:243:12:097:206:50
6:42
-0:42

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

6:42 /mi

Average Pace

7:20 /mi

Slowest Pace

7:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:10

46% of race

Time at Steady Pace

1:42:59

54% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:20 /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 mi11:13:4723:327:3423:32
7:34
#10301
10K
6.21 mi11:36:4146:267:2822:54
7:22
#9773
15K
9.32 mi11:59:381:09:237:2722:57
7:23
#9569
20K
12.43 mi12:22:381:32:237:2623:00
7:24
#9278
Half
13.11 mi12:27:431:37:287:265:05
7:27
#9300
25K
15.53 mi12:46:021:55:477:2718:19
7:33
#9262
30K
18.64 mi13:08:552:18:407:2622:53
7:22
#8670
20M
20.00 mi13:18:482:28:337:269:53
7:16
#8373
21M
21.00 mi13:26:212:36:067:267:33
7:33
#8140
35K
21.75 mi13:31:352:41:207:255:14
7:00
#8002
23M
23.00 mi13:40:302:50:157:248:55
7:07
#7701
24M
24.00 mi13:47:152:57:007:236:45
6:45
#7447
40K
24.85 mi13:53:013:02:467:215:46
6:45
#7231
25.2M
25.20 mi13:55:343:05:197:212:33
7:24
#7143
Finish
26.22 mi14:02:243:12:097:206:50
6:42
#6940
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10301199319939234(Top 35%)1529(Top 13%)1529(Top 31%)
10K6.21 mi3.10 mi9773+5281731+2621731+2629395(Top 35%)1578(Top 14%)1578(Top 32%)
15K9.32 mi3.11 mi9569+2041643+881643+889234(Top 35%)1529(Top 13%)1529(Top 31%)
20K12.43 mi3.11 mi9278+2911551+921551+928543(Top 32%)1307(Top 11%)1307(Top 27%)
Half13.11 mi0.68 mi9300-221556-51556-59839(Top 37%)1794(Top 16%)1794(Top 37%)
25K15.53 mi2.42 mi9262+381549+71549+79202(Top 35%)1628(Top 14%)1628(Top 33%)
30K18.64 mi3.11 mi8670+5921364+1851364+1856408(Top 24%)740(Top 6%)740(Top 15%)
20M20.00 mi1.36 mi8373+2971280+841280+845520(Top 21%)580(Top 5%)580(Top 12%)
21M21.00 mi1.00 mi8140+2331204+761204+764860(Top 18%)487(Top 4%)487(Top 10%)
35K21.75 mi0.75 mi8002+1381163+411163+415366(Top 20%)592(Top 5%)592(Top 12%)
23M23.00 mi1.25 mi7701+3011066+971066+974440(Top 17%)410(Top 4%)410(Top 8%)
24M24.00 mi1.00 mi7447+2541007+591007+593421(Top 13%)271(Top 2%)271(Top 6%)
40K24.85 mi0.85 mi7231+216952+55952+552601(Top 10%)200(Top 2%)200(Top 4%)
25.2M25.20 mi0.35 mi7143+88928+24928+243490(Top 13%)353(Top 3%)353(Top 7%)
Finish26.22 mi1.02 mi6940+203894+34894+343584(Top 13%)380(Top 3%)380(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9234

Females

1529

F18-39

1529

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9395

Females

1578

F18-39

1578

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9234

Females

1529

F18-39

1529

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8543

Females

1307

F18-39

1307

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9839

Females

1794

F18-39

1794

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9202

Females

1628

F18-39

1628

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6408

Females

740

F18-39

740

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

5520

Females

580

F18-39

580

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4860

Females

487

F18-39

487

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5366

Females

592

F18-39

592

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4440

Females

410

F18-39

410

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3421

Females

271

F18-39

271

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2601

Females

200

F18-39

200

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3490

Females

353

F18-39

353

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2story building
+22ft-21ft

Overall

3584

Females

380

F18-39

380

Passing Analysis

Category:
Athletes Passed
3737*
Passed By
376
Net Change
+3361
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10301
5K → 10K640*112+528#10301#9773
10K → 15K28985+204#9773#9569
15K → 20K32332+291#9569#9278
20K → Half1739-22#9278#9300
Half → 25K12991+38#9300#9262
25K → 30K5997+592#9262#8670
30K → 20M3014+297#8670#8373
20M → 21M2330+233#8373#8140
21M → 35K1391+138#8140#8002
35K → 23M3043+301#8002#7701
23M → 24M2540+254#7701#7447
24M → 40K2160+216#7447#7231
40K → 25.2M880+88#7231#7143
25.2M → Finish2052+203#7143#6940
TOTALS3737*376+3361

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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