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BOSTON MARATHON 2023

Jennifer Bell

Bib: 22878•F

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 36%
Masters (Masters Women)
#0 / 6539
Top 22%
Division (F50-54)
#0 / 1207
Top 14%
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
8:02/mi
24:56
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
49:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:14:25
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:39:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:45:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:10/mi
2:04:56
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:31:14
↑ 181↓ 1480.2%
20M
8:23/mi
2:42:38
↑ 64↓ 500.2%
21M
8:58/mi
2:51:36
↑ 106↓ 241.6%
35K· 21.75 mi
8:15/mi
2:57:46
↑ 17↓ 861.7%
23M
8:34/mi
3:08:30
↑ 23↓ 630.6%
24M
8:10/mi
3:16:40
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:23:46
↓ 200.3%
25.2M
8:54/mi
3:26:50
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:35:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:07
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:49:55
Pace8:23 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3824:568:0224:56
8:02
-
10K
6.21 mi11:45:1449:327:5824:36
7:55
-0:07
15K
9.32 mi12:10:071:14:257:5924:53
8:01
+0:06
20K
12.43 mi12:35:191:39:378:0125:12
8:07
+0:06
Half
13.11 mi12:40:491:45:078:015:30
8:04
-0:03
25K
15.53 mi13:00:382:04:568:0319:49
8:10
+0:06
30K
18.64 mi13:26:562:31:148:0726:18
8:28
+0:18
20M
20.00 mi13:38:202:42:388:0811:24
8:23
-0:05
21M
21.00 mi13:47:182:51:368:108:58
8:58
+0:35
35K
21.75 mi13:53:282:57:468:106:10
8:15
-0:43
23M
23.00 mi14:04:123:08:308:1210:44
8:34
+0:19
24M
24.00 mi14:12:223:16:408:128:10
8:10
-0:24
40K
24.85 mi14:19:283:23:468:127:06
8:18
+0:08
25.2M
25.20 mi14:22:323:26:508:123:04
8:54
+0:36
Finish
26.22 mi14:30:443:35:028:128:12
8:03
-0:51

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

7:55 /mi

Average Pace

8:12 /mi

Slowest Pace

8:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:23:00

94% of race

Time at Steady Pace

12:02

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:12 /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 mi11:20:3824:568:0224:56
8:02
#14202
10K
6.21 mi11:45:1449:327:5824:36
7:55
#14184
15K
9.32 mi12:10:071:14:257:5924:53
8:01
#14254
20K
12.43 mi12:35:191:39:378:0125:12
8:07
#14221
Half
13.11 mi12:40:491:45:078:015:30
8:04
#14253
25K
15.53 mi13:00:382:04:568:0319:49
8:10
#14223
30K
18.64 mi13:26:562:31:148:0726:18
8:28
#14199
20M
20.00 mi13:38:202:42:388:0811:24
8:23
#14090
21M
21.00 mi13:47:182:51:368:108:58
8:58
#13998
35K
21.75 mi13:53:282:57:468:106:10
8:15
#13971
23M
23.00 mi14:04:123:08:308:1210:44
8:34
#13930
24M
24.00 mi14:12:223:16:408:128:10
8:10
#13835
40K
24.85 mi14:19:283:23:468:127:06
8:18
#13758
25.2M
25.20 mi14:22:323:26:508:123:04
8:54
#13720
Finish
26.22 mi14:30:443:35:028:128:12
8:03
#13643
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi142024150415014469(Top 54%)4361(Top 38%)4361(Top 361%)
10K6.21 mi3.10 mi14184+184154-44154-414143(Top 53%)4139(Top 36%)4139(Top 343%)
15K9.32 mi3.11 mi14254-704209-554209-5514469(Top 54%)4361(Top 38%)4361(Top 361%)
20K12.43 mi3.11 mi14221+334214-54214-514293(Top 54%)4283(Top 37%)4283(Top 355%)
Half13.11 mi0.68 mi14253-324230-164230-1614874(Top 56%)4594(Top 40%)4594(Top 381%)
25K15.53 mi2.42 mi14223+304244-144244-1414060(Top 53%)4263(Top 37%)4263(Top 353%)
30K18.64 mi3.11 mi14199+244262-184262-1814084(Top 53%)4381(Top 38%)4381(Top 363%)
20M20.00 mi1.36 mi14090+1094222+404222+4012981(Top 49%)3850(Top 34%)3850(Top 319%)
21M21.00 mi1.00 mi13998+924184+384184+3813230(Top 50%)4065(Top 36%)4065(Top 337%)
35K21.75 mi0.75 mi13971+274179+54179+513774(Top 52%)4437(Top 39%)4437(Top 368%)
23M23.00 mi1.25 mi13930+414184-54184-513675(Top 51%)4433(Top 39%)4433(Top 367%)
24M24.00 mi1.00 mi13835+954155+294155+2912413(Top 47%)3810(Top 33%)3810(Top 316%)
40K24.85 mi0.85 mi13758+774117+384117+3812113(Top 45%)3738(Top 33%)3738(Top 310%)
25.2M25.20 mi0.35 mi13720+384102+154102+1511989(Top 45%)3727(Top 33%)3727(Top 309%)
Finish26.22 mi1.02 mi13643+774078+244078+2412471(Top 47%)3948(Top 35%)3948(Top 327%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14469

Females

4361

F50-54

4361

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14143

Females

4139

F50-54

4139

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14469

Females

4361

F50-54

4361

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14293

Females

4283

F50-54

4283

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14874

Females

4594

F50-54

4594

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

14060

Females

4263

F50-54

4263

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14084

Females

4381

F50-54

4381

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

12981

Females

3850

F50-54

3850

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

13230

Females

4065

F50-54

4065

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13774

Females

4437

F50-54

4437

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13675

Females

4433

F50-54

4433

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12413

Females

3810

F50-54

3810

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12113

Females

3738

F50-54

3738

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11989

Females

3727

F50-54

3727

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12471

Females

3948

F50-54

3948

Passing Analysis

Category:
Athletes Passed
1842
Passed By
1283
Net Change
+559
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14202
5K → 10K292274+18#14202#14184
10K → 15K154224-70#14184#14254
15K → 20K185152+33#14254#14221
20K → Half2052-32#14221#14253
Half → 25K154124+30#14253#14223
25K → 30K207183+24#14223#14199
30K → 20M14031+109#14199#14090
20M → 21M13543+92#14090#13998
21M → 35K6437+27#13998#13971
35K → 23M10362+41#13971#13930
23M → 24M11621+95#13930#13835
24M → 40K10629+77#13835#13758
40K → 25.2M5214+38#13758#13720
25.2M → Finish11437+77#13720#13643
TOTALS18421283+559
📊

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