Boston Marathon logo
BOSTON MARATHON 2024

Jennifer Bayliss

Bib: 12590•F

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 48%
Masters (Masters Women)
#0 / 6263
Top 38%
Division (F50-54)
#0 / 1187
Top 32%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
7:39/mi
23:45
↑ 97↓ 3451.5%
10K· 6.21 mi
7:45/mi
47:51
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:37
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:36:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:41:49
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:02:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:00/mi
2:30:19
↑ 181↓ 1480.2%
20M
8:49/mi
2:42:18
↑ 64↓ 500.2%
21M
9:24/mi
2:51:42
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
2:57:53
↑ 17↓ 861.7%
23M
8:20/mi
3:08:19
↑ 23↓ 630.6%
24M
8:17/mi
3:16:36
↓ 821.3%
40K· 24.85 mi
12:58/mi
3:27:41
↓ 200.3%
25.2M
15:42/mi
3:33:06
↑ 13↓ 160.2%
Finish· 26.22 mi
18:49/mi
3:52:17
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:49
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time2:10:28
Pace9:57 /mi
📊Positive Split: 28.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1123:457:3923:45
7:39
-
10K
6.21 mi11:16:1747:517:4224:06
7:45
+0:06
15K
9.32 mi11:40:031:11:377:4123:46
7:39
-0:06
20K
12.43 mi12:04:511:36:257:4624:48
7:59
+0:20
Half
13.11 mi12:10:151:41:497:465:24
7:55
-0:04
25K
15.53 mi12:30:472:02:217:5320:32
8:28
+0:33
30K
18.64 mi12:58:452:30:198:0427:58
9:00
+0:32
20M
20.00 mi13:10:442:42:188:0711:59
8:49
-0:11
21M
21.00 mi13:20:082:51:428:119:24
9:24
+0:35
35K
21.75 mi13:26:192:57:538:116:11
8:16
-1:08
23M
23.00 mi13:36:453:08:198:1110:26
8:20
+0:04
24M
24.00 mi13:45:023:16:368:128:17
8:17
-0:03
40K
24.85 mi13:56:073:27:418:2111:05
12:58
+4:41
25.2M
25.20 mi14:01:323:33:068:275:25
15:42
+2:44
Finish
26.22 mi14:20:433:52:178:5219:11
18:49
+3:07

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

7:39 /mi

Average Pace

8:52 /mi

Slowest Pace

18:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:16:36

85% of race

Time at Slower Pace

35:41

15% of race

Average Pace: 8:52 /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 mi10:52:1123:457:3923:45
7:39
#11897
10K
6.21 mi11:16:1747:517:4224:06
7:45
#12113
15K
9.32 mi11:40:031:11:377:4123:46
7:39
#11608
20K
12.43 mi12:04:511:36:257:4624:48
7:59
#11595
Half
13.11 mi12:10:151:41:497:465:24
7:55
#11612
25K
15.53 mi12:30:472:02:217:5320:32
8:28
#11801
30K
18.64 mi12:58:452:30:198:0427:58
9:00
#12103
20M
20.00 mi13:10:442:42:188:0711:59
8:49
#12009
21M
21.00 mi13:20:082:51:428:119:24
9:24
#11837
35K
21.75 mi13:26:192:57:538:116:11
8:16
#11727
23M
23.00 mi13:36:453:08:198:1110:26
8:20
#11370
24M
24.00 mi13:45:023:16:368:128:17
8:17
#11177
40K
24.85 mi13:56:073:27:418:2111:05
12:58
#12027
25.2M
25.20 mi14:01:323:33:068:275:25
15:42
#12424
Finish
26.22 mi14:20:433:52:178:5219:11
18:49
#14738
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi118973073307310833(Top 42%)2605(Top 24%)2605(Top 219%)
10K6.21 mi3.10 mi12113-2163231-1583231-15812318(Top 48%)3362(Top 31%)3362(Top 283%)
15K9.32 mi3.11 mi11608+5052986+2452986+24510833(Top 42%)2605(Top 24%)2605(Top 219%)
20K12.43 mi3.11 mi11595+132997-112997-1111720(Top 46%)3174(Top 29%)3174(Top 267%)
Half13.11 mi0.68 mi11612-173010-133010-1312227(Top 48%)3465(Top 32%)3465(Top 292%)
25K15.53 mi2.42 mi11801-1893159-1493159-14912898(Top 50%)3986(Top 36%)3986(Top 336%)
30K18.64 mi3.11 mi12103-3023408-2493408-24913262(Top 52%)4430(Top 41%)4430(Top 373%)
20M20.00 mi1.36 mi12009+943411-33411-311198(Top 44%)3596(Top 33%)3596(Top 303%)
21M21.00 mi1.00 mi11837+1723379+323379+3210404(Top 41%)3443(Top 32%)3443(Top 290%)
35K21.75 mi0.75 mi11727+1103347+323347+329419(Top 37%)2941(Top 27%)2941(Top 248%)
23M23.00 mi1.25 mi11370+3573237+1103237+1107586(Top 30%)2196(Top 20%)2196(Top 185%)
24M24.00 mi1.00 mi11177+1933177+603177+608257(Top 32%)2621(Top 24%)2621(Top 221%)
40K24.85 mi0.85 mi12027-8503687-5103687-51022216(Top 87%)9557(Top 87%)9557(Top 805%)
25.2M25.20 mi0.35 mi12424-3973925-2383925-23823812(Top 93%)10285(Top 94%)10285(Top 866%)
Finish26.22 mi1.02 mi14738-23145226-13015226-130125485(Top 100%)10904(Top 100%)10904(Top 919%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

10833

Females

2605

F50-54

2605

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12318

Females

3362

F50-54

3362

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

10833

Females

2605

F50-54

2605

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

11720

Females

3174

F50-54

3174

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12227

Females

3465

F50-54

3465

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

12898

Females

3986

F50-54

3986

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

13262

Females

4430

F50-54

4430

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11198

Females

3596

F50-54

3596

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10404

Females

3443

F50-54

3443

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9419

Females

2941

F50-54

2941

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7586

Females

2196

F50-54

2196

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8257

Females

2621

F50-54

2621

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

22216

Females

9557

F50-54

9557

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

23812

Females

10285

F50-54

10285

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2story building
+22ft-21ft

Overall

25485

Females

10904

F50-54

10904

Passing Analysis

Category:
Athletes Passed
2509
Passed By
5350
Net Change
-2841
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11897
5K → 10K196412-216#11897#12113
10K → 15K54439+505#12113#11608
15K → 20K243230+13#11608#11595
20K → Half3552-17#11595#11612
Half → 25K165354-189#11612#11801
25K → 30K194496-302#11801#12103
30K → 20M18086+94#12103#12009
20M → 21M22351+172#12009#11837
21M → 35K12515+110#11837#11727
35K → 23M36811+357#11727#11370
23M → 24M21219+193#11370#11177
24M → 40K11861-850#11177#12027
40K → 25.2M4401-397#12027#12424
25.2M → Finish92323-2314#12424#14738
TOTALS25095350-2841
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing