Boston Marathon logo
BOSTON MARATHON 2024

Sarah Summerhill

Bib: 15821•F

MI

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 50%
Gender (Female)
#0 / 10924
Top 38%
Masters (Masters Women)
#0 / 6263
Top 26%
Division (F45-49)
#0 / 1753
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
7:45/mi
24:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
49:11
↑ 79↓ 1380.4%
15K· 9.32 mi
8:10/mi
1:14:34
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:40:54
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:46:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:07:20
↑ 66↓ 880.2%
30K· 18.64 mi
8:52/mi
2:34:54
↑ 181↓ 1480.2%
20M
8:56/mi
2:47:02
↑ 64↓ 500.2%
21M
9:53/mi
2:56:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:03:20
↑ 17↓ 861.7%
23M
8:51/mi
3:14:25
↑ 23↓ 630.6%
24M
8:46/mi
3:23:11
↓ 821.3%
40K· 24.85 mi
9:04/mi
3:30:56
↓ 200.3%
25.2M
10:58/mi
3:34:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:12/mi
3:43:04
↑ 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
Time1:46:32
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:56:32
Pace8:53 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:3224:067:4524:06
7:45
-
10K
6.21 mi11:22:3749:117:5525:05
8:04
+0:19
15K
9.32 mi11:48:001:14:348:0025:23
8:10
+0:06
20K
12.43 mi12:14:201:40:548:0726:20
8:29
+0:19
Half
13.11 mi12:19:581:46:328:085:38
8:15
-0:14
25K
15.53 mi12:40:462:07:208:1220:48
8:35
+0:20
30K
18.64 mi13:08:202:34:548:1927:34
8:52
+0:17
20M
20.00 mi13:20:282:47:028:2112:08
8:56
+0:04
21M
21.00 mi13:30:212:56:558:259:53
9:53
+0:57
35K
21.75 mi13:36:463:03:208:266:25
8:35
-1:18
23M
23.00 mi13:47:513:14:258:2711:05
8:51
+0:16
24M
24.00 mi13:56:373:23:118:288:46
8:46
-0:05
40K
24.85 mi14:04:223:30:568:297:45
9:04
+0:18
25.2M
25.20 mi14:08:093:34:438:313:47
10:58
+1:54
Finish
26.22 mi14:16:303:43:048:318:21
8:12
-2:46

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

7:45 /mi

Average Pace

8:31 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:34

33% of race

Time at Steady Pace

2:07:05

57% of race

Time at Slower Pace

21:25

10% of race

Average Pace: 8:30 /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 mi10:57:3224:067:4524:06
7:45
#12799
10K
6.21 mi11:22:3749:117:5525:05
8:04
#13788
15K
9.32 mi11:48:001:14:348:0025:23
8:10
#14069
20K
12.43 mi12:14:201:40:548:0726:20
8:29
#14188
Half
13.11 mi12:19:581:46:328:085:38
8:15
#14189
25K
15.53 mi12:40:462:07:208:1220:48
8:35
#14016
30K
18.64 mi13:08:202:34:548:1927:34
8:52
#13673
20M
20.00 mi13:20:282:47:028:2112:08
8:56
#13475
21M
21.00 mi13:30:212:56:558:259:53
9:53
#13369
35K
21.75 mi13:36:463:03:208:266:25
8:35
#13259
23M
23.00 mi13:47:513:14:258:2711:05
8:51
#13046
24M
24.00 mi13:56:373:23:118:288:46
8:46
#12925
40K
24.85 mi14:04:223:30:568:297:45
9:04
#12826
25.2M
25.20 mi14:08:093:34:438:313:47
10:58
#12855
Finish
26.22 mi14:16:303:43:048:318:21
8:12
#12687
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi127993613361314556(Top 57%)4698(Top 43%)4698(Top 268%)
10K6.21 mi3.10 mi13788-9894204-5914204-59114724(Top 58%)4769(Top 44%)4769(Top 272%)
15K9.32 mi3.11 mi14069-2814384-1804384-18014556(Top 57%)4698(Top 43%)4698(Top 268%)
20K12.43 mi3.11 mi14188-1194476-924476-9214694(Top 58%)4830(Top 44%)4830(Top 276%)
Half13.11 mi0.68 mi14189-14485-94485-914434(Top 56%)4733(Top 43%)4733(Top 270%)
25K15.53 mi2.42 mi14016+1734412+734412+7313490(Top 53%)4317(Top 40%)4317(Top 246%)
30K18.64 mi3.11 mi13673+3434296+1164296+11612619(Top 49%)4071(Top 37%)4071(Top 232%)
20M20.00 mi1.36 mi13475+1984254+424254+4211779(Top 46%)3907(Top 36%)3907(Top 223%)
21M21.00 mi1.00 mi13369+1064249+54249+512543(Top 49%)4556(Top 42%)4556(Top 260%)
35K21.75 mi0.75 mi13259+1104218+314218+3111242(Top 44%)3904(Top 36%)3904(Top 223%)
23M23.00 mi1.25 mi13046+2134166+524166+5210432(Top 41%)3632(Top 33%)3632(Top 207%)
24M24.00 mi1.00 mi12925+1214131+354131+3510987(Top 43%)3930(Top 36%)3930(Top 224%)
40K24.85 mi0.85 mi12826+994132-14132-111215(Top 44%)4168(Top 38%)4168(Top 238%)
25.2M25.20 mi0.35 mi12855-294164-324164-3214460(Top 57%)5800(Top 53%)5800(Top 331%)
Finish26.22 mi1.02 mi12687+1684114+504114+509788(Top 38%)3428(Top 31%)3428(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

14556

Females

4698

F45-49

4698

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

14724

Females

4769

F45-49

4769

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

14556

Females

4698

F45-49

4698

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

14694

Females

4830

F45-49

4830

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14434

Females

4733

F45-49

4733

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

13490

Females

4317

F45-49

4317

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

12619

Females

4071

F45-49

4071

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

11779

Females

3907

F45-49

3907

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

12543

Females

4556

F45-49

4556

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11242

Females

3904

F45-49

3904

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10432

Females

3632

F45-49

3632

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

10987

Females

3930

F45-49

3930

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11215

Females

4168

F45-49

4168

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

14460

Females

5800

F45-49

5800

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

9788

Females

3428

F45-49

3428

Passing Analysis

Category:
Athletes Passed
2541
Passed By
2429
Net Change
+112
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12799
5K → 10K691058-989#12799#13788
10K → 15K145426-281#13788#14069
15K → 20K210329-119#14069#14188
20K → Half4142-1#14188#14189
Half → 25K302129+173#14189#14016
25K → 30K452109+343#14016#13673
30K → 20M24143+198#13673#13475
20M → 21M18377+106#13475#13369
21M → 35K13323+110#13369#13259
35K → 23M25138+213#13259#13046
23M → 24M15029+121#13046#12925
24M → 40K14950+99#12925#12826
40K → 25.2M2857-29#12826#12855
25.2M → Finish18719+168#12855#12687
TOTALS25412429+112
📊

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