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BOSTON MARATHON 2023

Yelena Thomas

Bib: 20005•F

CA

Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Age Group (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:33
Rank: #15634
Start → 5K
25:33 | 8:13/mi
10K· 6.21 mi
50:27
Rank: #15252 (+382)
5K → 10K
24:54 | 8:01/mi
15K· 9.32 mi
1:15:50
Rank: #15403 (-151)
10K → 15K
25:23 | 8:10/mi
20K· 12.43 mi
1:42:16
Rank: #15783 (-380)
15K → 20K
26:26 | 8:30/mi
Half· 13.11 mi
1:48:00
Rank: #15847 (-64)
20K → Half
5:44 | 8:24/mi
25K· 15.53 mi
2:12:36
Rank: #17552 (-1705)
Half → 25K
24:36 | 10:09/mi
30K· 18.64 mi
2:40:47
Rank: #17514 (+38)
25K → 30K
28:11 | 9:04/mi
20M
2:52:55
Rank: #17393 (+121)
30K → 20M
12:08 | 8:56/mi
21M
3:02:45
Rank: #17404 (-11)
20M → 21M
9:50 | 9:50/mi
35K· 21.75 mi
3:09:15
Rank: #17355 (+49)
21M → 35K
6:30 | 8:41/mi
23M
3:21:12
Rank: #17451 (-96)
35K → 23M
11:57 | 9:33/mi
24M
3:30:22
Rank: #17493 (-42)
23M → 24M
9:10 | 9:10/mi
40K· 24.85 mi
3:39:23
Rank: #17774 (-281)
24M → 40K
9:01 | 10:33/mi
25.2M
3:42:55
Rank: #17788 (-14)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:53:06
Rank: #17998 (-210)
25.2M → Finish
10:11 | 10:00/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:48:00
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time2:05:06
Pace9:33 /mi
📊Positive Split: 15.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0725:338:1325:33
8:13
-
10K
6.21 mi11:43:0150:278:0724:54
8:01
-0:12
15K
9.32 mi12:08:241:15:508:0825:23
8:10
+0:09
20K
12.43 mi12:34:501:42:168:1426:26
8:30
+0:20
Half
13.11 mi12:40:341:48:008:145:44
8:24
-0:06
25K
15.53 mi13:05:102:12:368:3224:36
10:09
+1:45
30K
18.64 mi13:33:212:40:478:3828:11
9:04
-1:05
20M
20.00 mi13:45:292:52:558:3912:08
8:56
-0:08
21M
21.00 mi13:55:193:02:458:429:50
9:50
+0:54
35K
21.75 mi14:01:493:09:158:426:30
8:41
-1:09
23M
23.00 mi14:13:463:21:128:4511:57
9:33
+0:52
24M
24.00 mi14:22:563:30:228:469:10
9:10
-0:23
40K
24.85 mi14:31:573:39:238:509:01
10:33
+1:23
25.2M
25.20 mi14:35:293:42:558:513:32
10:15
-0:18
Finish
26.22 mi14:45:403:53:068:5410:11
10:00
-0:15

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:01 /mi

Average Pace

8:54 /mi

Slowest Pace

10:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:48:00

46% of race

Time at Steady Pace

55:59

24% of race

Time at Slower Pace

1:09:07

30% of race

Average Pace: 8:53 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:18:0725:338:1325:33
8:13
#15634
10K
6.21 mi11:43:0150:278:0724:54
8:01
#15252
15K
9.32 mi12:08:241:15:508:0825:23
8:10
#15403
20K
12.43 mi12:34:501:42:168:1426:26
8:30
#15783
Half
13.11 mi12:40:341:48:008:145:44
8:24
#15847
25K
15.53 mi13:05:102:12:368:3224:36
10:09
#17552
30K
18.64 mi13:33:212:40:478:3828:11
9:04
#17514
20M
20.00 mi13:45:292:52:558:3912:08
8:56
#17393
21M
21.00 mi13:55:193:02:458:429:50
9:50
#17404
35K
21.75 mi14:01:493:09:158:426:30
8:41
#17355
23M
23.00 mi14:13:463:21:128:4511:57
9:33
#17451
24M
24.00 mi14:22:563:30:228:469:10
9:10
#17493
40K
24.85 mi14:31:573:39:238:509:01
10:33
#17774
25.2M
25.20 mi14:35:293:42:558:513:32
10:15
#17788
Finish
26.22 mi14:45:403:53:068:5410:11
10:00
#17998
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi156345063506315668(Top 59%)5094(Top 45%)5094(Top 271%)
10K6.21 mi3.10 mi15252+3824803+2604803+26014932(Top 56%)4633(Top 41%)4633(Top 247%)
15K9.32 mi3.11 mi15403-1514919-1164919-11615668(Top 59%)5094(Top 45%)5094(Top 271%)
20K12.43 mi3.11 mi15783-3805171-2525171-25216922(Top 64%)5891(Top 52%)5891(Top 314%)
Half13.11 mi0.68 mi15847-645214-435214-4317219(Top 65%)6035(Top 53%)6035(Top 321%)
25K15.53 mi2.42 mi17552-17056266-10526266-105222512(Top 85%)9120(Top 80%)9120(Top 486%)
30K18.64 mi3.11 mi17514+386265+16265+117557(Top 66%)6391(Top 56%)6391(Top 340%)
20M20.00 mi1.36 mi17393+1216213+526213+5216193(Top 61%)5690(Top 50%)5690(Top 303%)
21M21.00 mi1.00 mi17404-116236-236236-2317397(Top 65%)6430(Top 56%)6430(Top 342%)
35K21.75 mi0.75 mi17355+496216+206216+2016389(Top 62%)5938(Top 52%)5938(Top 316%)
23M23.00 mi1.25 mi17451-966292-766292-7618500(Top 69%)7127(Top 62%)7127(Top 379%)
24M24.00 mi1.00 mi17493-426323-316323-3117949(Top 67%)6873(Top 60%)6873(Top 366%)
40K24.85 mi0.85 mi17774-2816502-1796502-17921316(Top 80%)8781(Top 77%)8781(Top 468%)
25.2M25.20 mi0.35 mi17788-146511-96511-918306(Top 69%)7115(Top 62%)7115(Top 379%)
Finish26.22 mi1.02 mi17998-2106653-1426653-14221743(Top 82%)8976(Top 79%)8976(Top 478%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15668

Females

5094

F40-44

5094

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14932

Females

4633

F40-44

4633

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15668

Females

5094

F40-44

5094

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

16922

Females

5891

F40-44

5891

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

17219

Females

6035

F40-44

6035

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22512

Females

9120

F40-44

9120

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17557

Females

6391

F40-44

6391

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16193

Females

5690

F40-44

5690

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17397

Females

6430

F40-44

6430

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16389

Females

5938

F40-44

5938

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18500

Females

7127

F40-44

7127

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

17949

Females

6873

F40-44

6873

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21316

Females

8781

F40-44

8781

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18306

Females

7115

F40-44

7115

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

21743

Females

8976

F40-44

8976

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1389
Passed By
3753
Net Change
-2364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15634
5K → 10K536154+382#15634#15252
10K → 15K127278-151#15252#15403
15K → 20K80460-380#15403#15783
20K → Half1478-64#15783#15847
Half → 25K61711-1705#15847#17552
25K → 30K186148+38#17552#17514
30K → 20M14423+121#17514#17393
20M → 21M8192-11#17393#17404
21M → 35K7829+49#17404#17355
35K → 23M57153-96#17355#17451
23M → 24M4688-42#17451#17493
24M → 40K10291-281#17493#17774
40K → 25.2M1529-14#17774#17788
25.2M → Finish9219-210#17788#17998
TOTALS13893753-2364
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing