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BOSTON MARATHON 2023

Rebecca Sullivan

Bib: 16721•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Division (F18-39)
#0 / 4884
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
8:23/mi
26:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:40/mi
52:57
↑ 79↓ 1380.4%
15K· 9.32 mi
8:39/mi
1:19:51
↑ 67↓ 78
20K· 12.43 mi
8:32/mi
1:46:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:52:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:30/mi
2:12:41
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:39:16
↑ 181↓ 1480.2%
20M
8:39/mi
2:51:01
↑ 64↓ 500.2%
21M
8:39/mi
2:59:40
↑ 106↓ 241.6%
35K· 21.75 mi
8:05/mi
3:05:43
↑ 17↓ 861.7%
23M
8:38/mi
3:16:31
↑ 23↓ 630.6%
24M
8:37/mi
3:25:08
↓ 821.3%
40K· 24.85 mi
8:53/mi
3:32:44
↓ 200.3%
25.2M
9:14/mi
3:35:55
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:44:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:52:04
Pace8:33 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:52:03
Pace8:33 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1526:028:2326:02
8:23
-
10K
6.21 mi11:43:1052:578:3126:55
8:40
+0:17
15K
9.32 mi12:10:041:19:518:3426:54
8:39
-0:01
20K
12.43 mi12:36:341:46:218:3326:30
8:32
-0:07
Half
13.11 mi12:42:171:52:048:335:43
8:23
-0:09
25K
15.53 mi13:02:542:12:418:3220:37
8:30
+0:07
30K
18.64 mi13:29:292:39:168:3326:35
8:33
+0:03
20M
20.00 mi13:41:142:51:018:3311:45
8:39
+0:06
21M
21.00 mi13:49:532:59:408:338:39
8:39
0:00
35K
21.75 mi13:55:563:05:438:326:03
8:05
-0:34
23M
23.00 mi14:06:443:16:318:3310:48
8:38
+0:33
24M
24.00 mi14:15:213:25:088:338:37
8:37
-0:01
40K
24.85 mi14:22:573:32:448:347:36
8:53
+0:16
25.2M
25.20 mi14:26:083:35:558:343:11
9:14
+0:21
Finish
26.22 mi14:34:203:44:078:338:12
8:03
-1:11

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

8:03 /mi

Average Pace

8:33 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:33:20

95% of race

Time at Steady Pace

10:47

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:33 /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 mi11:16:1526:028:2326:02
8:23
#16734
10K
6.21 mi11:43:1052:578:3126:55
8:40
#18035
15K
9.32 mi12:10:041:19:518:3426:54
8:39
#18278
20K
12.43 mi12:36:341:46:218:3326:30
8:32
#17946
Half
13.11 mi12:42:171:52:048:335:43
8:23
#17883
25K
15.53 mi13:02:542:12:418:3220:37
8:30
#17585
30K
18.64 mi13:29:292:39:168:3326:35
8:33
#17024
20M
20.00 mi13:41:142:51:018:3311:45
8:39
#16839
21M
21.00 mi13:49:532:59:408:338:39
8:39
#16525
35K
21.75 mi13:55:563:05:438:326:03
8:05
#16386
23M
23.00 mi14:06:443:16:318:3310:48
8:38
#16230
24M
24.00 mi14:15:213:25:088:338:37
8:37
#16158
40K
24.85 mi14:22:573:32:448:347:36
8:53
#16127
25.2M
25.20 mi14:26:083:35:558:343:11
9:14
#16087
Finish
26.22 mi14:34:203:44:078:338:12
8:03
#15950
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi167345749574918770(Top 71%)6959(Top 61%)6959(Top 142%)
10K6.21 mi3.10 mi18035-13016557-8086557-80819215(Top 72%)7206(Top 63%)7206(Top 148%)
15K9.32 mi3.11 mi18278-2436678-1216678-12118770(Top 71%)6959(Top 61%)6959(Top 142%)
20K12.43 mi3.11 mi17946+3326490+1886490+18817041(Top 64%)5944(Top 52%)5944(Top 122%)
Half13.11 mi0.68 mi17883+636454+366454+3617029(Top 64%)5908(Top 52%)5908(Top 121%)
25K15.53 mi2.42 mi17585+2986287+1676287+16716227(Top 61%)5574(Top 49%)5574(Top 114%)
30K18.64 mi3.11 mi17024+5615977+3105977+31014669(Top 55%)4736(Top 41%)4736(Top 97%)
20M20.00 mi1.36 mi16839+1855881+965881+9614582(Top 55%)4760(Top 42%)4760(Top 97%)
21M21.00 mi1.00 mi16525+3145723+1585723+15811404(Top 43%)3102(Top 27%)3102(Top 64%)
35K21.75 mi0.75 mi16386+1395649+745649+7412779(Top 48%)3886(Top 34%)3886(Top 80%)
23M23.00 mi1.25 mi16230+1565573+765573+7613973(Top 52%)4606(Top 40%)4606(Top 94%)
24M24.00 mi1.00 mi16158+725550+235550+2315191(Top 57%)5342(Top 47%)5342(Top 109%)
40K24.85 mi0.85 mi16127+315546+45546+415578(Top 59%)5623(Top 49%)5623(Top 115%)
25.2M25.20 mi0.35 mi16087+405522+245522+2413898(Top 52%)4709(Top 41%)4709(Top 96%)
Finish26.22 mi1.02 mi15950+1375462+605462+6012484(Top 47%)3961(Top 35%)3961(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18770

Females

6959

F18-39

6959

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19215

Females

7206

F18-39

7206

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18770

Females

6959

F18-39

6959

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

17041

Females

5944

F18-39

5944

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17029

Females

5908

F18-39

5908

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

16227

Females

5574

F18-39

5574

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14669

Females

4736

F18-39

4736

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14582

Females

4760

F18-39

4760

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

11404

Females

3102

F18-39

3102

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

12779

Females

3886

F18-39

3886

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13973

Females

4606

F18-39

4606

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15191

Females

5342

F18-39

5342

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15578

Females

5623

F18-39

5623

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13898

Females

4709

F18-39

4709

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12484

Females

3961

F18-39

3961

Passing Analysis

Category:
Athletes Passed
2686
Passed By
1902
Net Change
+784
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16734
5K → 10K451346-1301#16734#18035
10K → 15K111354-243#18035#18278
15K → 20K37240+332#18278#17946
20K → Half8017+63#17946#17883
Half → 25K31113+298#17883#17585
25K → 30K5665+561#17585#17024
30K → 20M1927+185#17024#16839
20M → 21M3162+314#16839#16525
21M → 35K1434+139#16525#16386
35K → 23M17721+156#16386#16230
23M → 24M10230+72#16230#16158
24M → 40K7241+31#16158#16127
40K → 25.2M488+40#16127#16087
25.2M → Finish15114+137#16087#15950
TOTALS26861902+784
📊

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