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BOSTON MARATHON 2023

Caroline Bell

Bib: 16215•F

FL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Division (F18-39)
#0 / 4884
Top 49%
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
8:15/mi
25:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
50:27
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:15:03
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:39:32
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:44:49
↑ 19↓ 370.5%
25K· 15.53 mi
7:54/mi
2:03:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:29:03
↑ 181↓ 1480.2%
20M
8:13/mi
2:40:13
↑ 64↓ 500.2%
21M
8:25/mi
2:48:38
↑ 106↓ 241.6%
35K· 21.75 mi
8:25/mi
2:54:56
↑ 17↓ 861.7%
23M
8:33/mi
3:05:38
↑ 23↓ 630.6%
24M
8:33/mi
3:14:11
↓ 821.3%
40K· 24.85 mi
8:12/mi
3:21:12
↓ 200.3%
25.2M
8:39/mi
3:24:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:33/mi
3:31:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:49
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:47:04
Pace8:10 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0225:398:1525:39
8:15
-
10K
6.21 mi11:40:5050:278:0724:48
7:59
-0:16
15K
9.32 mi12:05:261:15:038:0324:36
7:55
-0:04
20K
12.43 mi12:29:551:39:328:0124:29
7:53
-0:02
Half
13.11 mi12:35:121:44:498:005:17
7:45
-0:08
25K
15.53 mi12:54:212:03:587:5919:09
7:54
+0:09
30K
18.64 mi13:19:262:29:038:0025:05
8:04
+0:10
20M
20.00 mi13:30:362:40:138:0111:10
8:13
+0:09
21M
21.00 mi13:39:012:48:388:028:25
8:25
+0:12
35K
21.75 mi13:45:192:54:568:036:18
8:25
0:00
23M
23.00 mi13:56:013:05:388:0410:42
8:33
+0:08
24M
24.00 mi14:04:343:14:118:058:33
8:33
0:00
40K
24.85 mi14:11:353:21:128:067:01
8:12
-0:21
25.2M
25.20 mi14:14:343:24:118:062:59
8:39
+0:27
Finish
26.22 mi14:22:163:31:538:057:42
7:33
-1:06

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

7:33 /mi

Average Pace

8:05 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:56

83% of race

Time at Steady Pace

36:57

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:05 /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 mi11:16:0225:398:1525:39
8:15
#15856
10K
6.21 mi11:40:5050:278:0724:48
7:59
#15247
15K
9.32 mi12:05:261:15:038:0324:36
7:55
#14765
20K
12.43 mi12:29:551:39:328:0124:29
7:53
#14176
Half
13.11 mi12:35:121:44:498:005:17
7:45
#14089
25K
15.53 mi12:54:212:03:587:5919:09
7:54
#13718
30K
18.64 mi13:19:262:29:038:0025:05
8:04
#13268
20M
20.00 mi13:30:362:40:138:0111:10
8:13
#13134
21M
21.00 mi13:39:012:48:388:028:25
8:25
#12907
35K
21.75 mi13:45:192:54:568:036:18
8:25
#12971
23M
23.00 mi13:56:013:05:388:0410:42
8:33
#12973
24M
24.00 mi14:04:343:14:118:058:33
8:33
#13060
40K
24.85 mi14:11:353:21:128:067:01
8:12
#12987
25.2M
25.20 mi14:14:343:24:118:062:59
8:39
#12937
Finish
26.22 mi14:22:163:31:538:057:42
7:33
#12778
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi158565181518113726(Top 52%)3916(Top 34%)3916(Top 80%)
10K6.21 mi3.10 mi15247+6094798+3834798+38314686(Top 55%)4469(Top 39%)4469(Top 92%)
15K9.32 mi3.11 mi14765+4824516+2824516+28213726(Top 52%)3916(Top 34%)3916(Top 80%)
20K12.43 mi3.11 mi14176+5894188+3284188+32812468(Top 47%)3242(Top 28%)3242(Top 66%)
Half13.11 mi0.68 mi14089+874137+514137+5112321(Top 46%)3113(Top 27%)3113(Top 64%)
25K15.53 mi2.42 mi13718+3713937+2003937+20011925(Top 45%)3038(Top 27%)3038(Top 62%)
30K18.64 mi3.11 mi13268+4503708+2293708+22911484(Top 43%)2898(Top 25%)2898(Top 59%)
20M20.00 mi1.36 mi13134+1343644+643644+6411835(Top 44%)3181(Top 28%)3181(Top 65%)
21M21.00 mi1.00 mi12907+2273534+1103534+11010016(Top 38%)2406(Top 21%)2406(Top 49%)
35K21.75 mi0.75 mi12971-643593-593593-5914789(Top 56%)5001(Top 44%)5001(Top 102%)
23M23.00 mi1.25 mi12973-23616-233616-2313512(Top 51%)4343(Top 38%)4343(Top 89%)
24M24.00 mi1.00 mi13060-873685-693685-6914776(Top 56%)5095(Top 45%)5095(Top 104%)
40K24.85 mi0.85 mi12987+733668+173668+1711439(Top 43%)3387(Top 30%)3387(Top 69%)
25.2M25.20 mi0.35 mi12937+503646+223646+2210545(Top 40%)2971(Top 26%)2971(Top 61%)
Finish26.22 mi1.02 mi12778+1593573+733573+739015(Top 34%)2266(Top 20%)2266(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13726

Females

3916

F18-39

3916

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14686

Females

4469

F18-39

4469

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13726

Females

3916

F18-39

3916

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12468

Females

3242

F18-39

3242

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12321

Females

3113

F18-39

3113

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

11925

Females

3038

F18-39

3038

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11484

Females

2898

F18-39

2898

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11835

Females

3181

F18-39

3181

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10016

Females

2406

F18-39

2406

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

14789

Females

5001

F18-39

5001

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13512

Females

4343

F18-39

4343

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

14776

Females

5095

F18-39

5095

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11439

Females

3387

F18-39

3387

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10545

Females

2971

F18-39

2971

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9015

Females

2266

F18-39

2266

Passing Analysis

Category:
Athletes Passed
3653
Passed By
575
Net Change
+3078
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15856
5K → 10K70899+609#15856#15247
10K → 15K51331+482#15247#14765
15K → 20K60415+589#14765#14176
20K → Half925+87#14176#14089
Half → 25K3809+371#14089#13718
25K → 30K47626+450#13718#13268
30K → 20M16026+134#13268#13134
20M → 21M24215+227#13134#12907
21M → 35K2791-64#12907#12971
35K → 23M9395-2#12971#12973
23M → 24M38125-87#12973#13060
24M → 40K9623+73#13060#12987
40K → 25.2M577+50#12987#12937
25.2M → Finish1678+159#12937#12778
TOTALS3653575+3078
📊

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