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BOSTON MARATHON 2024

Colleen Rosazza

Bib: 18230•F

CO

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 44%
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
8:04/mi
25:03
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:27
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:15:28
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:40:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:46:26
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:08:04
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:35:50
↑ 181↓ 1480.2%
20M
10:39/mi
2:50:19
↑ 64↓ 500.2%
21M
9:25/mi
2:59:44
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:06:15
↑ 17↓ 861.7%
23M
8:45/mi
3:17:12
↑ 23↓ 630.6%
24M
9:21/mi
3:26:33
↓ 821.3%
40K· 24.85 mi
9:48/mi
3:34:56
↓ 200.3%
25.2M
12:40/mi
3:39:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:47/mi
3:48:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:26
Pace8:07 /mi
2nd Half
Distance13.11 mi
Time2:01:49
Pace9:18 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0125:038:0425:03
8:04
-
10K
6.21 mi11:43:2550:278:0725:24
8:11
+0:07
15K
9.32 mi12:08:261:15:288:0625:01
8:03
-0:08
20K
12.43 mi12:33:541:40:568:0725:28
8:12
+0:09
Half
13.11 mi12:39:241:46:268:075:30
8:04
-0:08
25K
15.53 mi13:01:022:08:048:1521:38
8:55
+0:51
30K
18.64 mi13:28:482:35:508:2227:46
8:56
+0:01
20M
20.00 mi13:43:172:50:198:3114:29
10:39
+1:43
21M
21.00 mi13:52:422:59:448:349:25
9:25
-1:14
35K
21.75 mi13:59:133:06:158:346:31
8:43
-0:42
23M
23.00 mi14:10:103:17:128:3410:57
8:45
+0:02
24M
24.00 mi14:19:313:26:338:369:21
9:21
+0:36
40K
24.85 mi14:27:543:34:568:398:23
9:48
+0:27
25.2M
25.20 mi14:32:163:39:188:424:22
12:40
+2:52
Finish
26.22 mi14:41:133:48:158:438:57
8:47
-3:53

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

8:03 /mi

Average Pace

8:43 /mi

Slowest Pace

12:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:58

35% of race

Time at Steady Pace

1:50:38

48% of race

Time at Slower Pace

36:39

16% of race

Average Pace: 8:42 /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 mi11:18:0125:038:0425:03
8:04
#15123
10K
6.21 mi11:43:2550:278:0725:24
8:11
#15248
15K
9.32 mi12:08:261:15:288:0625:01
8:03
#14690
20K
12.43 mi12:33:541:40:568:0725:28
8:12
#14204
Half
13.11 mi12:39:241:46:268:075:30
8:04
#14136
25K
15.53 mi13:01:022:08:048:1521:38
8:55
#14310
30K
18.64 mi13:28:482:35:508:2227:46
8:56
#13967
20M
20.00 mi13:43:172:50:198:3114:29
10:39
#14485
21M
21.00 mi13:52:422:59:448:349:25
9:25
#14197
35K
21.75 mi13:59:133:06:158:346:31
8:43
#14075
23M
23.00 mi14:10:103:17:128:3410:57
8:45
#13793
24M
24.00 mi14:19:313:26:338:369:21
9:21
#13777
40K
24.85 mi14:27:543:34:568:398:23
9:48
#13804
25.2M
25.20 mi14:32:163:39:188:424:22
12:40
#13955
Finish
26.22 mi14:41:133:48:158:438:57
8:47
#13894
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi151235018501813812(Top 54%)4251(Top 39%)4251(Top 91%)
10K6.21 mi3.10 mi15248-1255085-675085-6715382(Top 60%)5148(Top 47%)5148(Top 110%)
15K9.32 mi3.11 mi14690+5584755+3304755+33013812(Top 54%)4251(Top 39%)4251(Top 91%)
20K12.43 mi3.11 mi14204+4864483+2724483+27213138(Top 51%)3927(Top 36%)3927(Top 84%)
Half13.11 mi0.68 mi14136+684450+334450+3313224(Top 52%)4038(Top 37%)4038(Top 87%)
25K15.53 mi2.42 mi14310-1744585-1354585-13515167(Top 59%)5265(Top 48%)5265(Top 113%)
30K18.64 mi3.11 mi13967+3434462+1234462+12312927(Top 51%)4244(Top 39%)4244(Top 91%)
20M20.00 mi1.36 mi14485-5184811-3494811-34918461(Top 72%)7432(Top 68%)7432(Top 159%)
21M21.00 mi1.00 mi14197+2884707+1044707+10410476(Top 41%)3480(Top 32%)3480(Top 75%)
35K21.75 mi0.75 mi14075+1224668+394668+3911902(Top 47%)4246(Top 39%)4246(Top 91%)
23M23.00 mi1.25 mi13793+2824573+954573+959840(Top 39%)3319(Top 30%)3319(Top 71%)
24M24.00 mi1.00 mi13777+164608-354608-3513784(Top 54%)5328(Top 49%)5328(Top 114%)
40K24.85 mi0.85 mi13804-274662-544662-5414295(Top 56%)5669(Top 52%)5669(Top 122%)
25.2M25.20 mi0.35 mi13955-1514768-1064768-10618921(Top 74%)7951(Top 73%)7951(Top 171%)
Finish26.22 mi1.02 mi13894+614761+74761+713077(Top 51%)5010(Top 46%)5010(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

13812

Females

4251

F18-39

4251

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15382

Females

5148

F18-39

5148

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

13812

Females

4251

F18-39

4251

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13138

Females

3927

F18-39

3927

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13224

Females

4038

F18-39

4038

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15167

Females

5265

F18-39

5265

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

12927

Females

4244

F18-39

4244

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

18461

Females

7432

F18-39

7432

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10476

Females

3480

F18-39

3480

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

11902

Females

4246

F18-39

4246

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

9840

Females

3319

F18-39

3319

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

13784

Females

5328

F18-39

5328

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14295

Females

5669

F18-39

5669

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

18921

Females

7951

F18-39

7951

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13077

Females

5010

F18-39

5010

Passing Analysis

Category:
Athletes Passed
3120
Passed By
1891
Net Change
+1229
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15123
5K → 10K220345-125#15123#15248
10K → 15K59436+558#15248#14690
15K → 20K53549+486#14690#14204
20K → Half779+68#14204#14136
Half → 25K162336-174#14136#14310
25K → 30K449106+343#14310#13967
30K → 20M35553-518#13967#14485
20M → 21M30517+288#14485#14197
21M → 35K14321+122#14197#14075
35K → 23M2908+282#14075#13793
23M → 24M10589+16#13793#13777
24M → 40K83110-27#13777#13804
40K → 25.2M12163-151#13804#13955
25.2M → Finish11049+61#13955#13894
TOTALS31201891+1229
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing