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BOSTON MARATHON 2023

Yukiko Uchida

Bib: 19395•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 45%
Masters (Masters Women)
#0 / 6539
Top 34%
Division (F40-44)
#0 / 1878
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
8:11/mi
25:24
↑ 97↓ 3451.5%
10K· 6.21 mi
8:08/mi
50:40
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:16:15
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:42:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:47:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:08:33
↑ 66↓ 880.2%
30K· 18.64 mi
8:52/mi
2:36:05
↑ 181↓ 1480.2%
20M
8:49/mi
2:48:04
↑ 64↓ 500.2%
21M
9:24/mi
2:57:28
↑ 106↓ 241.6%
35K· 21.75 mi
8:31/mi
3:03:50
↑ 17↓ 861.7%
23M
8:56/mi
3:15:01
↑ 23↓ 630.6%
24M
8:21/mi
3:23:22
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:30:33
↓ 200.3%
25.2M
8:48/mi
3:33:35
↑ 13↓ 160.2%
Finish· 26.22 mi
8:07/mi
3:41:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:54
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:53:57
Pace8:42 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2725:248:1125:24
8:11
-
10K
6.21 mi11:42:4350:408:0925:16
8:08
-0:03
15K
9.32 mi12:08:181:16:158:1125:35
8:14
+0:06
20K
12.43 mi12:34:201:42:178:1426:02
8:23
+0:09
Half
13.11 mi12:39:571:47:548:145:37
8:14
-0:09
25K
15.53 mi13:00:362:08:338:1720:39
8:31
+0:17
30K
18.64 mi13:28:082:36:058:2227:32
8:52
+0:21
20M
20.00 mi13:40:072:48:048:2411:59
8:49
-0:03
21M
21.00 mi13:49:312:57:288:279:24
9:24
+0:35
35K
21.75 mi13:55:533:03:508:276:22
8:31
-0:53
23M
23.00 mi14:07:043:15:018:2911:11
8:56
+0:25
24M
24.00 mi14:15:253:23:228:288:21
8:21
-0:35
40K
24.85 mi14:22:363:30:338:287:11
8:24
+0:03
25.2M
25.20 mi14:25:383:33:358:293:02
8:48
+0:24
Finish
26.22 mi14:33:543:41:518:288:16
8:07
-0:41

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

8:07 /mi

Average Pace

8:28 /mi

Slowest Pace

9:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:16

91% of race

Time at Steady Pace

20:35

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:28 /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 mi11:17:2725:248:1125:24
8:11
#15291
10K
6.21 mi11:42:4350:408:0925:16
8:08
#15492
15K
9.32 mi12:08:181:16:158:1125:35
8:14
#15683
20K
12.43 mi12:34:201:42:178:1426:02
8:23
#15791
Half
13.11 mi12:39:571:47:548:145:37
8:14
#15793
25K
15.53 mi13:00:362:08:338:1720:39
8:31
#15864
30K
18.64 mi13:28:082:36:058:2227:32
8:52
#15957
20M
20.00 mi13:40:072:48:048:2411:59
8:49
#15926
21M
21.00 mi13:49:312:57:288:279:24
9:24
#15872
35K
21.75 mi13:55:533:03:508:276:22
8:31
#15816
23M
23.00 mi14:07:043:15:018:2911:11
8:56
#15792
24M
24.00 mi14:15:253:23:228:288:21
8:21
#15701
40K
24.85 mi14:22:363:30:338:287:11
8:24
#15595
25.2M
25.20 mi14:25:383:33:358:293:02
8:48
#15527
Finish
26.22 mi14:33:543:41:518:288:16
8:07
#15406
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi152914828482816112(Top 61%)5358(Top 47%)5358(Top 285%)
10K6.21 mi3.10 mi15492-2014965-1374965-13715771(Top 59%)5126(Top 45%)5126(Top 273%)
15K9.32 mi3.11 mi15683-1915087-1225087-12216112(Top 61%)5358(Top 47%)5358(Top 285%)
20K12.43 mi3.11 mi15791-1085176-895176-8916122(Top 61%)5424(Top 47%)5424(Top 289%)
Half13.11 mi0.68 mi15793-25180-45180-416065(Top 60%)5333(Top 47%)5333(Top 284%)
25K15.53 mi2.42 mi15864-715251-715251-7116304(Top 61%)5611(Top 49%)5611(Top 299%)
30K18.64 mi3.11 mi15957-935342-915342-9116443(Top 62%)5749(Top 50%)5749(Top 306%)
20M20.00 mi1.36 mi15926+315354-125354-1215538(Top 58%)5295(Top 46%)5295(Top 282%)
21M21.00 mi1.00 mi15872+545337+175337+1715484(Top 58%)5339(Top 47%)5339(Top 284%)
35K21.75 mi0.75 mi15816+565324+135324+1315403(Top 58%)5348(Top 47%)5348(Top 285%)
23M23.00 mi1.25 mi15792+245335-115335-1115707(Top 59%)5576(Top 49%)5576(Top 297%)
24M24.00 mi1.00 mi15701+915303+325303+3213572(Top 51%)4441(Top 39%)4441(Top 236%)
40K24.85 mi0.85 mi15595+1065242+615242+6112761(Top 48%)4099(Top 36%)4099(Top 218%)
25.2M25.20 mi0.35 mi15527+685209+335209+3311439(Top 43%)3451(Top 30%)3451(Top 184%)
Finish26.22 mi1.02 mi15406+1215151+585151+5812897(Top 48%)4168(Top 36%)4168(Top 222%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

16112

Females

5358

F40-44

5358

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15771

Females

5126

F40-44

5126

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

16112

Females

5358

F40-44

5358

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16122

Females

5424

F40-44

5424

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16065

Females

5333

F40-44

5333

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

16304

Females

5611

F40-44

5611

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16443

Females

5749

F40-44

5749

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15538

Females

5295

F40-44

5295

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15484

Females

5339

F40-44

5339

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15403

Females

5348

F40-44

5348

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15707

Females

5576

F40-44

5576

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13572

Females

4441

F40-44

4441

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12761

Females

4099

F40-44

4099

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11439

Females

3451

F40-44

3451

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12897

Females

4168

F40-44

4168

Passing Analysis

Category:
Athletes Passed
1599
Passed By
1714
Net Change
-115
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15291
5K → 10K207408-201#15291#15492
10K → 15K116307-191#15492#15683
15K → 20K140248-108#15683#15791
20K → Half3234-2#15791#15793
Half → 25K110181-71#15793#15864
25K → 30K149242-93#15864#15957
30K → 20M10574+31#15957#15926
20M → 21M11258+54#15926#15872
21M → 35K8226+56#15872#15816
35K → 23M8864+24#15816#15792
23M → 24M12130+91#15792#15701
24M → 40K12418+106#15701#15595
40K → 25.2M680+68#15595#15527
25.2M → Finish14524+121#15527#15406
TOTALS15991714-115
📊

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