Boston Marathon logo
BOSTON MARATHON 2024

Brianna Crombie

Bib: 29551•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

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
9:54/mi
30:47
↑ 97↓ 3451.5%
10K· 6.21 mi
9:49/mi
1:01:16
↑ 79↓ 1380.4%
15K· 9.32 mi
9:36/mi
1:31:04
↑ 67↓ 78
20K· 12.43 mi
9:53/mi
2:01:47
↑ 106↓ 860.1%
Half· 13.11 mi
10:07/mi
2:08:41
↑ 19↓ 370.5%
25K· 15.53 mi
10:26/mi
2:33:59
↑ 66↓ 880.2%
30K· 18.64 mi
10:39/mi
3:07:04
↑ 181↓ 1480.2%
20M
11:08/mi
3:22:12
↑ 64↓ 500.2%
21M
11:09/mi
3:33:21
↑ 106↓ 241.6%
35K· 21.75 mi
10:16/mi
3:41:02
↑ 17↓ 861.7%
23M
10:48/mi
3:54:33
↑ 23↓ 630.6%
24M
11:28/mi
4:06:01
↓ 821.3%
40K· 24.85 mi
11:08/mi
4:15:32
↓ 200.3%
25.2M
11:59/mi
4:19:40
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
4:28:46
↑ 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
Time2:08:41
Pace9:49 /mi
2nd Half
Distance13.11 mi
Time2:20:05
Pace10:41 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:1330:479:5430:47
9:54
-
10K
6.21 mi12:26:421:01:169:5230:29
9:49
-0:05
15K
9.32 mi12:56:301:31:049:4629:48
9:36
-0:13
20K
12.43 mi13:27:132:01:479:4830:43
9:53
+0:17
Half
13.11 mi13:34:072:08:419:496:54
10:07
+0:14
25K
15.53 mi13:59:252:33:599:5525:18
10:26
+0:19
30K
18.64 mi14:32:303:07:0410:0233:05
10:39
+0:13
20M
20.00 mi14:47:383:22:1210:0715:08
11:08
+0:29
21M
21.00 mi14:58:473:33:2110:1011:09
11:09
+0:01
35K
21.75 mi15:06:283:41:0210:107:41
10:16
-0:53
23M
23.00 mi15:19:593:54:3310:1213:31
10:48
+0:32
24M
24.00 mi15:31:274:06:0110:1511:28
11:28
+0:40
40K
24.85 mi15:40:584:15:3210:179:31
11:08
-0:20
25.2M
25.20 mi15:45:064:19:4010:184:08
11:59
+0:51
Finish
26.22 mi15:54:124:28:4610:159:06
8:56
-3:03

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

8:56 /mi

Average Pace

10:15 /mi

Slowest Pace

11:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:53

49% of race

Time at Steady Pace

1:26:29

32% of race

Time at Slower Pace

51:24

19% of race

Average Pace: 10:15 /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 mi11:56:1330:479:5430:47
9:54
#22785
10K
6.21 mi12:26:421:01:169:5230:29
9:49
#22463
15K
9.32 mi12:56:301:31:049:4629:48
9:36
#21938
20K
12.43 mi13:27:132:01:479:4830:43
9:53
#21467
Half
13.11 mi13:34:072:08:419:496:54
10:07
#21475
25K
15.53 mi13:59:252:33:599:5525:18
10:26
#21238
30K
18.64 mi14:32:303:07:0410:0233:05
10:39
#20848
20M
20.00 mi14:47:383:22:1210:0715:08
11:08
#20735
21M
21.00 mi14:58:473:33:2110:1011:09
11:09
#20531
35K
21.75 mi15:06:283:41:0210:107:41
10:16
#20437
23M
23.00 mi15:19:593:54:3310:1213:31
10:48
#20281
24M
24.00 mi15:31:274:06:0110:1511:28
11:28
#20288
40K
24.85 mi15:40:584:15:3210:179:31
11:08
#20192
25.2M
25.20 mi15:45:064:19:4010:184:08
11:59
#20141
Finish
26.22 mi15:54:124:28:4610:159:06
8:56
#19972
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi227859285928520933(Top 82%)8283(Top 76%)8283(Top 178%)
10K6.21 mi3.10 mi22463+3229138+1479138+14722119(Top 87%)8982(Top 82%)8982(Top 193%)
15K9.32 mi3.11 mi21938+5258866+2728866+27220933(Top 82%)8283(Top 76%)8283(Top 178%)
20K12.43 mi3.11 mi21467+4718614+2528614+25220297(Top 79%)7984(Top 73%)7984(Top 171%)
Half13.11 mi0.68 mi21475-88621-78621-721767(Top 85%)8826(Top 81%)8826(Top 189%)
25K15.53 mi2.42 mi21238+2378501+1208501+12020263(Top 79%)8067(Top 74%)8067(Top 173%)
30K18.64 mi3.11 mi20848+3908352+1498352+14919159(Top 75%)7664(Top 70%)7664(Top 164%)
20M20.00 mi1.36 mi20735+1138317+358317+3519588(Top 77%)8009(Top 73%)8009(Top 172%)
21M21.00 mi1.00 mi20531+2048231+868231+8616745(Top 66%)6728(Top 62%)6728(Top 144%)
35K21.75 mi0.75 mi20437+948198+338198+3317971(Top 70%)7332(Top 67%)7332(Top 157%)
23M23.00 mi1.25 mi20281+1568143+558143+5517843(Top 70%)7335(Top 67%)7335(Top 157%)
24M24.00 mi1.00 mi20288-78169-268169-2620355(Top 80%)8614(Top 79%)8614(Top 185%)
40K24.85 mi0.85 mi20192+968131+388131+3818449(Top 72%)7732(Top 71%)7732(Top 166%)
25.2M25.20 mi0.35 mi20141+518112+198112+1917362(Top 68%)7231(Top 66%)7231(Top 155%)
Finish26.22 mi1.02 mi19972+1698036+768036+7613887(Top 54%)5426(Top 50%)5426(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

20933

Females

8283

F18-39

8283

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

22119

Females

8982

F18-39

8982

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

20933

Females

8283

F18-39

8283

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

20297

Females

7984

F18-39

7984

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

21767

Females

8826

F18-39

8826

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20263

Females

8067

F18-39

8067

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19159

Females

7664

F18-39

7664

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

19588

Females

8009

F18-39

8009

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

16745

Females

6728

F18-39

6728

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

17971

Females

7332

F18-39

7332

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

17843

Females

7335

F18-39

7335

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

20355

Females

8614

F18-39

8614

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

18449

Females

7732

F18-39

7732

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

17362

Females

7231

F18-39

7231

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

13887

Females

5426

F18-39

5426

Passing Analysis

Category:
Athletes Passed
3166
Passed By
353
Net Change
+2813
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22785
5K → 10K39775+322#22785#22463
10K → 15K53813+525#22463#21938
15K → 20K48817+471#21938#21467
20K → Half3442-8#21467#21475
Half → 25K27235+237#21475#21238
25K → 30K41727+390#21238#20848
30K → 20M14431+113#20848#20735
20M → 21M2084+204#20735#20531
21M → 35K1006+94#20531#20437
35K → 23M1659+156#20437#20281
23M → 24M6067-7#20281#20288
24M → 40K11620+96#20288#20192
40K → 25.2M565+51#20192#20141
25.2M → Finish1712+169#20141#19972
TOTALS3166353+2813
📊

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