Boston Marathon logo
BOSTON MARATHON 2024

Alexandra Rolfe

Bib: 28461•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:06
Rank: #18935
Start → 5K
27:06 | 8:43/mi
10K· 6.21 mi
53:11
Rank: #17857 (+1078)
5K → 10K
26:05 | 8:24/mi
15K· 9.32 mi
1:19:48
Rank: #17477 (+380)
10K → 15K
26:37 | 8:34/mi
20K· 12.43 mi
1:47:41
Rank: #17307 (+170)
15K → 20K
27:53 | 8:58/mi
Half· 13.11 mi
1:53:51
Rank: #17356 (-49)
20K → Half
6:10 | 9:02/mi
25K· 15.53 mi
2:16:11
Rank: #17187 (+169)
Half → 25K
22:20 | 9:13/mi
30K· 18.64 mi
2:46:08
Rank: #16947 (+240)
25K → 30K
29:57 | 9:38/mi
20M
2:59:21
Rank: #16845 (+102)
30K → 20M
13:13 | 9:44/mi
21M
3:09:39
Rank: #16691 (+154)
20M → 21M
10:18 | 10:18/mi
35K· 21.75 mi
3:17:13
Rank: #16716 (-25)
21M → 35K
7:34 | 10:07/mi
23M
3:30:25
Rank: #16787 (-71)
35K → 23M
13:12 | 10:33/mi
24M
3:40:53
Rank: #16850 (-63)
23M → 24M
10:28 | 10:28/mi
40K· 24.85 mi
3:49:51
Rank: #16833 (+17)
24M → 40K
8:58 | 10:29/mi
25.2M
3:53:40
Rank: #16779 (+54)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:02:33
Rank: #16613 (+166)
25.2M → Finish
8:53 | 8:43/mi

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
Time1:53:51
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:08:42
Pace9:49 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0927:068:4327:06
8:43
-
10K
6.21 mi12:13:1453:118:3426:05
8:24
-0:19
15K
9.32 mi12:39:511:19:488:3426:37
8:34
+0:10
20K
12.43 mi13:07:441:47:418:4027:53
8:58
+0:24
Half
13.11 mi13:13:541:53:518:416:10
9:02
+0:04
25K
15.53 mi13:36:142:16:118:4622:20
9:13
+0:11
30K
18.64 mi14:06:112:46:088:5529:57
9:38
+0:25
20M
20.00 mi14:19:242:59:218:5813:13
9:44
+0:06
21M
21.00 mi14:29:423:09:399:0210:18
10:18
+0:34
35K
21.75 mi14:37:163:17:139:047:34
10:07
-0:11
23M
23.00 mi14:50:283:30:259:0913:12
10:33
+0:26
24M
24.00 mi15:00:563:40:539:1210:28
10:28
-0:05
40K
24.85 mi15:09:543:49:519:158:58
10:29
+0:01
25.2M
25.20 mi15:13:433:53:409:163:49
11:04
+0:35
Finish
26.22 mi15:22:364:02:339:158:53
8:43
-2:21

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

8:24 /mi

Average Pace

9:15 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:04

60% of race

Time at Steady Pace

43:10

18% of race

Time at Slower Pace

54:19

22% of race

Average Pace: 9:15 /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 mi11:47:0927:068:4327:06
8:43
#18935
10K
6.21 mi12:13:1453:118:3426:05
8:24
#17857
15K
9.32 mi12:39:511:19:488:3426:37
8:34
#17477
20K
12.43 mi13:07:441:47:418:4027:53
8:58
#17307
Half
13.11 mi13:13:541:53:518:416:10
9:02
#17356
25K
15.53 mi13:36:142:16:118:4622:20
9:13
#17187
30K
18.64 mi14:06:112:46:088:5529:57
9:38
#16947
20M
20.00 mi14:19:242:59:218:5813:13
9:44
#16845
21M
21.00 mi14:29:423:09:399:0210:18
10:18
#16691
35K
21.75 mi14:37:163:17:139:047:34
10:07
#16716
23M
23.00 mi14:50:283:30:259:0913:12
10:33
#16787
24M
24.00 mi15:00:563:40:539:1210:28
10:28
#16850
40K
24.85 mi15:09:543:49:519:158:58
10:29
#16833
25.2M
25.20 mi15:13:433:53:409:163:49
11:04
#16779
Finish
26.22 mi15:22:364:02:339:158:53
8:43
#16613
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi189357309730916773(Top 66%)6012(Top 55%)6012(Top 129%)
10K6.21 mi3.10 mi17857+10786652+6576652+65716679(Top 65%)5937(Top 54%)5937(Top 127%)
15K9.32 mi3.11 mi17477+3806417+2356417+23516773(Top 66%)6012(Top 55%)6012(Top 129%)
20K12.43 mi3.11 mi17307+1706351+666351+6617242(Top 67%)6295(Top 58%)6295(Top 135%)
Half13.11 mi0.68 mi17356-496387-366387-3618456(Top 72%)7025(Top 64%)7025(Top 151%)
25K15.53 mi2.42 mi17187+1696307+806307+8016467(Top 64%)5975(Top 55%)5975(Top 128%)
30K18.64 mi3.11 mi16947+2406232+756232+7516008(Top 63%)5983(Top 55%)5983(Top 128%)
20M20.00 mi1.36 mi16845+1026207+256207+2515478(Top 61%)5944(Top 54%)5944(Top 128%)
21M21.00 mi1.00 mi16691+1546152+556152+5514150(Top 55%)5396(Top 49%)5396(Top 116%)
35K21.75 mi0.75 mi16716-256184-326184-3217527(Top 69%)7100(Top 65%)7100(Top 152%)
23M23.00 mi1.25 mi16787-716255-716255-7117167(Top 67%)6985(Top 64%)6985(Top 150%)
24M24.00 mi1.00 mi16850-636319-646319-6417756(Top 69%)7341(Top 67%)7341(Top 158%)
40K24.85 mi0.85 mi16833+176342-236342-2316663(Top 65%)6839(Top 63%)6839(Top 147%)
25.2M25.20 mi0.35 mi16779+546323+196323+1914773(Top 58%)5938(Top 54%)5938(Top 127%)
Finish26.22 mi1.02 mi16613+1666254+696254+6912768(Top 50%)4856(Top 44%)4856(Top 104%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

16773

Females

6012

F18-39

6012

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

16679

Females

5937

F18-39

5937

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

16773

Females

6012

F18-39

6012

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

17242

Females

6295

F18-39

6295

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

18456

Females

7025

F18-39

7025

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

16467

Females

5975

F18-39

5975

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

16008

Females

5983

F18-39

5983

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

15478

Females

5944

F18-39

5944

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

14150

Females

5396

F18-39

5396

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

17527

Females

7100

F18-39

7100

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17167

Females

6985

F18-39

6985

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

17756

Females

7341

F18-39

7341

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

16663

Females

6839

F18-39

6839

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

14773

Females

5938

F18-39

5938

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

12768

Females

4856

F18-39

4856

Passing Analysis

Category:
Athletes Passed
3474
Passed By
1152
Net Change
+2322
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18935
5K → 10K111436+1078#18935#17857
10K → 15K44464+380#17857#17477
15K → 20K334164+170#17477#17307
20K → Half3079-49#17307#17356
Half → 25K284115+169#17356#17187
25K → 30K370130+240#17187#16947
30K → 20M16967+102#16947#16845
20M → 21M19642+154#16845#16691
21M → 35K5277-25#16691#16716
35K → 23M79150-71#16716#16787
23M → 24M61124-63#16787#16850
24M → 40K9982+17#16850#16833
40K → 25.2M6612+54#16833#16779
25.2M → Finish17610+166#16779#16613
TOTALS34741152+2322
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing