Boston Marathon logo
BOSTON MARATHON 2024

Chelsea Osgood

Bib: 11504•F

OH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 41%
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
23:10
Rank: #10416
Start → 5K
23:10 | 7:27/mi
10K· 6.21 mi
47:11
Rank: #11245 (-829)
5K → 10K
24:01 | 7:44/mi
15K· 9.32 mi
1:11:28
Rank: #11471 (-226)
10K → 15K
24:17 | 7:49/mi
20K· 12.43 mi
1:36:00
Rank: #11354 (+117)
15K → 20K
24:32 | 7:54/mi
Half· 13.11 mi
1:41:21
Rank: #11366 (-12)
20K → Half
5:21 | 7:50/mi
25K· 15.53 mi
2:02:01
Rank: #11654 (-288)
Half → 25K
20:40 | 8:31/mi
30K· 18.64 mi
2:30:32
Rank: #12187 (-533)
25K → 30K
28:31 | 9:11/mi
20M
2:45:17
Rank: #12904 (-717)
30K → 20M
14:45 | 10:51/mi
21M
2:56:10
Rank: #13154 (-250)
20M → 21M
10:53 | 10:53/mi
35K· 21.75 mi
3:04:33
Rank: #13601 (-447)
21M → 35K
8:23 | 11:12/mi
23M
3:15:11
Rank: #13256 (+345)
35K → 23M
10:38 | 8:30/mi
24M
3:26:44
Rank: #13823 (-567)
23M → 24M
11:33 | 11:33/mi
40K· 24.85 mi
3:34:46
Rank: #13764 (+59)
24M → 40K
8:02 | 9:24/mi
25.2M
3:37:56
Rank: #13616 (+148)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:46:13
Rank: #13422 (+194)
25.2M → Finish
8:17 | 8:08/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
Time1:41:21
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time2:04:52
Pace9:32 /mi
📊Positive Split: 23.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5423:107:2723:10
7:27
-
10K
6.21 mi11:14:5547:117:3624:01
7:44
+0:17
15K
9.32 mi11:39:121:11:287:4024:17
7:49
+0:05
20K
12.43 mi12:03:441:36:007:4324:32
7:54
+0:05
Half
13.11 mi12:09:051:41:217:445:21
7:50
-0:04
25K
15.53 mi12:29:452:02:017:5120:40
8:31
+0:41
30K
18.64 mi12:58:162:30:328:0528:31
9:11
+0:40
20M
20.00 mi13:13:012:45:178:1614:45
10:51
+1:40
21M
21.00 mi13:23:542:56:108:2310:53
10:53
+0:02
35K
21.75 mi13:32:173:04:338:298:23
11:12
+0:19
23M
23.00 mi13:42:553:15:118:2910:38
8:30
-2:42
24M
24.00 mi13:54:283:26:448:3711:33
11:33
+3:03
40K
24.85 mi14:02:303:34:468:388:02
9:24
-2:09
25.2M
25.20 mi14:05:403:37:568:393:10
9:11
-0:13
Finish
26.22 mi14:13:573:46:138:388:17
8:08
-1:03

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

7:27 /mi

Average Pace

8:38 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:49

34% of race

Time at Steady Pace

1:35:48

42% of race

Time at Slower Pace

53:36

24% of race

Average Pace: 8:38 /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 mi10:50:5423:107:2723:10
7:27
#10416
10K
6.21 mi11:14:5547:117:3624:01
7:44
#11245
15K
9.32 mi11:39:121:11:287:4024:17
7:49
#11471
20K
12.43 mi12:03:441:36:007:4324:32
7:54
#11354
Half
13.11 mi12:09:051:41:217:445:21
7:50
#11366
25K
15.53 mi12:29:452:02:017:5120:40
8:31
#11654
30K
18.64 mi12:58:162:30:328:0528:31
9:11
#12187
20M
20.00 mi13:13:012:45:178:1614:45
10:51
#12904
21M
21.00 mi13:23:542:56:108:2310:53
10:53
#13154
35K
21.75 mi13:32:173:04:338:298:23
11:12
#13601
23M
23.00 mi13:42:553:15:118:2910:38
8:30
#13256
24M
24.00 mi13:54:283:26:448:3711:33
11:33
#13823
40K
24.85 mi14:02:303:34:468:388:02
9:24
#13764
25.2M
25.20 mi14:05:403:37:568:393:10
9:11
#13616
Finish
26.22 mi14:13:573:46:138:388:17
8:08
#13422
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi104162240224012071(Top 47%)3286(Top 30%)3286(Top 71%)
10K6.21 mi3.10 mi11245-8292737-4972737-49712107(Top 47%)3251(Top 30%)3251(Top 70%)
15K9.32 mi3.11 mi11471-2262902-1652902-16512071(Top 47%)3286(Top 30%)3286(Top 71%)
20K12.43 mi3.11 mi11354+1172867+352867+3511120(Top 44%)2877(Top 26%)2877(Top 62%)
Half13.11 mi0.68 mi11366-122873-62873-611720(Top 46%)3201(Top 29%)3201(Top 69%)
25K15.53 mi2.42 mi11654-2883066-1933066-19313197(Top 52%)4154(Top 38%)4154(Top 89%)
30K18.64 mi3.11 mi12187-5333456-3903456-39014106(Top 55%)4918(Top 45%)4918(Top 106%)
20M20.00 mi1.36 mi12904-7173921-4653921-46518925(Top 74%)7671(Top 70%)7671(Top 165%)
21M21.00 mi1.00 mi13154-2504131-2104131-21016036(Top 63%)6350(Top 58%)6350(Top 136%)
35K21.75 mi0.75 mi13601-4474408-2774408-27720245(Top 79%)8473(Top 78%)8473(Top 182%)
23M23.00 mi1.25 mi13256+3454278+1304278+1308475(Top 33%)2620(Top 24%)2620(Top 56%)
24M24.00 mi1.00 mi13823-5674629-3514629-35120544(Top 80%)8702(Top 80%)8702(Top 187%)
40K24.85 mi0.85 mi13764+594639-104639-1012714(Top 50%)4901(Top 45%)4901(Top 105%)
25.2M25.20 mi0.35 mi13616+1484576+634576+637498(Top 29%)2447(Top 22%)2447(Top 53%)
Finish26.22 mi1.02 mi13422+1944506+704506+709393(Top 37%)3239(Top 30%)3239(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

12071

Females

3286

F18-39

3286

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

12107

Females

3251

F18-39

3251

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

12071

Females

3286

F18-39

3286

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11120

Females

2877

F18-39

2877

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

11720

Females

3201

F18-39

3201

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

13197

Females

4154

F18-39

4154

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

14106

Females

4918

F18-39

4918

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

18925

Females

7671

F18-39

7671

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16036

Females

6350

F18-39

6350

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

20245

Females

8473

F18-39

8473

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8475

Females

2620

F18-39

2620

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

20544

Females

8702

F18-39

8702

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

12714

Females

4901

F18-39

4901

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7498

Females

2447

F18-39

2447

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9393

Females

3239

F18-39

3239

Passing Analysis

Category:
Athletes Passed
1779
Passed By
4785
Net Change
-3006
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10416
5K → 10K73902-829#10416#11245
10K → 15K137363-226#11245#11471
15K → 20K286169+117#11471#11354
20K → Half4052-12#11354#11366
Half → 25K131419-288#11366#11654
25K → 30K152685-533#11654#12187
30K → 20M30747-717#12187#12904
20M → 21M67317-250#12904#13154
21M → 35K21468-447#13154#13601
35K → 23M3494+345#13601#13256
23M → 24M24591-567#13256#13823
24M → 40K11657+59#13823#13764
40K → 25.2M1513+148#13764#13616
25.2M → Finish2028+194#13616#13422
TOTALS17794785-3006
📊

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