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BOSTON MARATHON 2023

Yulan Ma

Bib: 18089•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F45-49)
#0 / 1817
Top 10%
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
7:52/mi
24:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:58
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:11:52
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:36:11
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:41:27
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
2:00:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:25:00
↑ 181↓ 1480.2%
20M
7:55/mi
2:35:45
↑ 64↓ 500.2%
21M
8:35/mi
2:44:20
↑ 106↓ 241.6%
35K· 21.75 mi
7:34/mi
2:50:00
↑ 17↓ 861.7%
23M
7:58/mi
2:59:58
↑ 23↓ 630.6%
24M
7:29/mi
3:07:27
↓ 821.3%
40K· 24.85 mi
8:04/mi
3:14:21
↓ 200.3%
25.2M
8:33/mi
3:17:18
↑ 13↓ 160.2%
Finish· 26.22 mi
7:41/mi
3:25:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:27
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:43:41
Pace7:55 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5324:277:5224:27
7:52
-
10K
6.21 mi11:39:2447:587:4323:31
7:34
-0:18
15K
9.32 mi12:03:181:11:527:4323:54
7:42
+0:08
20K
12.43 mi12:27:371:36:117:4424:19
7:50
+0:08
Half
13.11 mi12:32:531:41:277:445:16
7:43
-0:07
25K
15.53 mi12:51:532:00:277:4519:00
7:50
+0:07
30K
18.64 mi13:16:262:25:007:4724:33
7:54
+0:04
20M
20.00 mi13:27:112:35:457:4710:45
7:55
+0:01
21M
21.00 mi13:35:462:44:207:508:35
8:35
+0:40
35K
21.75 mi13:41:262:50:007:495:40
7:34
-1:01
23M
23.00 mi13:51:242:59:587:499:58
7:58
+0:24
24M
24.00 mi13:58:533:07:277:497:29
7:29
-0:29
40K
24.85 mi14:05:473:14:217:496:54
8:04
+0:35
25.2M
25.20 mi14:08:443:17:187:502:57
8:33
+0:29
Finish
26.22 mi14:16:343:25:087:507:50
7:41
-0:52

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

7:29 /mi

Average Pace

7:50 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:13:36

94% of race

Time at Steady Pace

11:32

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi11:15:5324:277:5224:27
7:52
#13003
10K
6.21 mi11:39:2447:587:4323:31
7:34
#12010
15K
9.32 mi12:03:181:11:527:4323:54
7:42
#11882
20K
12.43 mi12:27:371:36:117:4424:19
7:50
#11871
Half
13.11 mi12:32:531:41:277:445:16
7:43
#11891
25K
15.53 mi12:51:532:00:277:4519:00
7:50
#11757
30K
18.64 mi13:16:262:25:007:4724:33
7:54
#11435
20M
20.00 mi13:27:112:35:457:4710:45
7:55
#11251
21M
21.00 mi13:35:462:44:207:508:35
8:35
#11216
35K
21.75 mi13:41:262:50:007:495:40
7:34
#11122
23M
23.00 mi13:51:242:59:587:499:58
7:58
#10985
24M
24.00 mi13:58:533:07:277:497:29
7:29
#10820
40K
24.85 mi14:05:473:14:217:496:54
8:04
#10792
25.2M
25.20 mi14:08:443:17:187:502:57
8:33
#10756
Finish
26.22 mi14:16:343:25:087:507:50
7:41
#10693
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi130033436343611795(Top 44%)2789(Top 24%)2789(Top 153%)
10K6.21 mi3.10 mi12010+9932875+5612875+56111060(Top 42%)2347(Top 21%)2347(Top 129%)
15K9.32 mi3.11 mi11882+1282822+532822+5311795(Top 44%)2789(Top 24%)2789(Top 153%)
20K12.43 mi3.11 mi11871+112841-192841-1911963(Top 45%)2946(Top 26%)2946(Top 162%)
Half13.11 mi0.68 mi11891-202850-92850-912052(Top 45%)2930(Top 26%)2930(Top 161%)
25K15.53 mi2.42 mi11757+1342790+602790+6011399(Top 43%)2711(Top 24%)2711(Top 149%)
30K18.64 mi3.11 mi11435+3222654+1362654+13610170(Top 38%)2242(Top 20%)2242(Top 123%)
20M20.00 mi1.36 mi11251+1842570+842570+849659(Top 36%)2094(Top 18%)2094(Top 115%)
21M21.00 mi1.00 mi11216+352573-32573-310980(Top 41%)2853(Top 25%)2853(Top 157%)
35K21.75 mi0.75 mi11122+942532+412532+419146(Top 34%)1996(Top 17%)1996(Top 110%)
23M23.00 mi1.25 mi10985+1372488+442488+449508(Top 36%)2273(Top 20%)2273(Top 125%)
24M24.00 mi1.00 mi10820+1652436+522436+527634(Top 29%)1539(Top 13%)1539(Top 85%)
40K24.85 mi0.85 mi10792+282445-92445-910532(Top 40%)2894(Top 25%)2894(Top 159%)
25.2M25.20 mi0.35 mi10756+362444+12444+19926(Top 37%)2642(Top 23%)2642(Top 145%)
Finish26.22 mi1.02 mi10693+632440+42440+49920(Top 37%)2667(Top 23%)2667(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11795

Females

2789

F45-49

2789

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11060

Females

2347

F45-49

2347

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11795

Females

2789

F45-49

2789

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11963

Females

2946

F45-49

2946

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12052

Females

2930

F45-49

2930

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11399

Females

2711

F45-49

2711

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10170

Females

2242

F45-49

2242

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9659

Females

2094

F45-49

2094

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10980

Females

2853

F45-49

2853

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9146

Females

1996

F45-49

1996

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9508

Females

2273

F45-49

2273

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

7634

Females

1539

F45-49

1539

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10532

Females

2894

F45-49

2894

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9926

Females

2642

F45-49

2642

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

9920

Females

2667

F45-49

2667

Passing Analysis

Category:
Athletes Passed
3059
Passed By
749
Net Change
+2310
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13003
5K → 10K105764+993#13003#12010
10K → 15K261133+128#12010#11882
15K → 20K170159+11#11882#11871
20K → Half2444-20#11871#11891
Half → 25K20066+134#11891#11757
25K → 30K36846+322#11757#11435
30K → 20M20117+184#11435#11251
20M → 21M10671+35#11251#11216
21M → 35K995+94#11216#11122
35K → 23M16629+137#11122#10985
23M → 24M17611+165#10985#10820
24M → 40K7648+28#10820#10792
40K → 25.2M4913+36#10792#10756
25.2M → Finish10643+63#10756#10693
TOTALS3059749+2310
📊

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