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BOSTON MARATHON 2023

Grace Morrissey

Bib: 31520•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
10:52/mi
33:46
↑ 97↓ 3451.5%
10K· 6.21 mi
10:47/mi
1:07:15
↑ 79↓ 1380.4%
15K· 9.32 mi
10:35/mi
1:40:08
↑ 67↓ 78
20K· 12.43 mi
10:47/mi
2:13:39
↑ 106↓ 860.1%
Half· 13.11 mi
12:16/mi
2:22:01
↑ 19↓ 370.5%
25K· 15.53 mi
10:21/mi
2:47:06
↑ 66↓ 880.2%
30K· 18.64 mi
10:29/mi
3:19:40
↑ 181↓ 1480.2%
20M
10:17/mi
3:33:38
↑ 64↓ 500.2%
21M
10:30/mi
3:44:08
↑ 106↓ 241.6%
35K· 21.75 mi
9:28/mi
3:51:13
↑ 17↓ 861.7%
23M
9:49/mi
4:03:30
↑ 23↓ 630.6%
24M
9:40/mi
4:13:10
↓ 821.3%
40K· 24.85 mi
9:38/mi
4:21:24
↓ 200.3%
25.2M
10:44/mi
4:25:06
↑ 13↓ 160.2%
Finish· 26.22 mi
9:28/mi
4:34:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:22:01
Pace10:50 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:12:44
Pace10:08 /mi
📊Negative Split: 6.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4433:4610:5233:46
10:52
-
10K
6.21 mi12:27:131:07:1510:4933:29
10:47
-0:05
15K
9.32 mi13:00:061:40:0810:4532:53
10:35
-0:12
20K
12.43 mi13:33:372:13:3910:4533:31
10:47
+0:12
Half
13.11 mi13:41:592:22:0110:508:22
12:16
+1:29
25K
15.53 mi14:07:042:47:0610:4525:05
10:21
-1:55
30K
18.64 mi14:39:383:19:4010:4332:34
10:29
+0:08
20M
20.00 mi14:53:363:33:3810:4113:58
10:17
-0:12
21M
21.00 mi15:04:063:44:0810:4010:30
10:30
+0:13
35K
21.75 mi15:11:113:51:1310:387:05
9:28
-1:02
23M
23.00 mi15:23:284:03:3010:3512:17
9:49
+0:21
24M
24.00 mi15:33:084:13:1010:339:40
9:40
-0:09
40K
24.85 mi15:41:224:21:2410:318:14
9:38
-0:02
25.2M
25.20 mi15:45:044:25:0610:313:42
10:44
+1:06
Finish
26.22 mi15:54:434:34:4510:299:39
9:28
-1:16

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

9:28 /mi

Average Pace

10:29 /mi

Slowest Pace

12:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:55

17% of race

Time at Steady Pace

3:05:42

68% of race

Time at Slower Pace

42:08

15% of race

Average Pace: 10:29 /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 mi11:53:4433:4610:5233:46
10:52
#25485
10K
6.21 mi12:27:131:07:1510:4933:29
10:47
#25309
15K
9.32 mi13:00:061:40:0810:4532:53
10:35
#25056
20K
12.43 mi13:33:372:13:3910:4533:31
10:47
#24862
Half
13.11 mi13:41:592:22:0110:508:22
12:16
#24954
25K
15.53 mi14:07:042:47:0610:4525:05
10:21
#24643
30K
18.64 mi14:39:383:19:4010:4332:34
10:29
#24183
20M
20.00 mi14:53:363:33:3810:4113:58
10:17
#24001
21M
21.00 mi15:04:063:44:0810:4010:30
10:30
#23815
35K
21.75 mi15:11:113:51:1310:387:05
9:28
#23692
23M
23.00 mi15:23:284:03:3010:3512:17
9:49
#23512
24M
24.00 mi15:33:084:13:1010:339:40
9:40
#23390
40K
24.85 mi15:41:224:21:2410:318:14
9:38
#23260
25.2M
25.20 mi15:45:044:25:0610:313:42
10:44
#23197
Finish
26.22 mi15:54:434:34:4510:299:39
9:28
#23090
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25485107131071324598(Top 92%)10234(Top 90%)10234(Top 210%)
10K6.21 mi3.10 mi25309+17610603+11010603+11025135(Top 94%)10514(Top 92%)10514(Top 215%)
15K9.32 mi3.11 mi25056+25310467+13610467+13624598(Top 92%)10234(Top 90%)10234(Top 210%)
20K12.43 mi3.11 mi24862+19410375+9210375+9224304(Top 91%)10089(Top 88%)10089(Top 207%)
Half13.11 mi0.68 mi24954-9210433-5810433-5826040(Top 98%)11080(Top 97%)11080(Top 227%)
25K15.53 mi2.42 mi24643+31110270+16310270+16322921(Top 86%)9347(Top 82%)9347(Top 191%)
30K18.64 mi3.11 mi24183+46010031+23910031+23922179(Top 83%)9001(Top 79%)9001(Top 184%)
20M20.00 mi1.36 mi24001+1829926+1059926+10521230(Top 80%)8541(Top 75%)8541(Top 175%)
21M21.00 mi1.00 mi23815+1869834+929834+9219623(Top 74%)7721(Top 68%)7721(Top 158%)
35K21.75 mi0.75 mi23692+1239769+659769+6519789(Top 74%)7817(Top 68%)7817(Top 160%)
23M23.00 mi1.25 mi23512+1809682+879682+8719477(Top 73%)7673(Top 67%)7673(Top 157%)
24M24.00 mi1.00 mi23390+1229631+519631+5119808(Top 74%)7879(Top 69%)7879(Top 161%)
40K24.85 mi0.85 mi23260+1309569+629569+6218830(Top 71%)7403(Top 65%)7403(Top 152%)
25.2M25.20 mi0.35 mi23197+639546+239546+2319853(Top 75%)7994(Top 70%)7994(Top 164%)
Finish26.22 mi1.02 mi23090+1079493+539493+5320045(Top 75%)8030(Top 70%)8030(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

24598

Females

10234

F18-39

10234

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

25135

Females

10514

F18-39

10514

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

24598

Females

10234

F18-39

10234

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24304

Females

10089

F18-39

10089

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

26040

Females

11080

F18-39

11080

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

22921

Females

9347

F18-39

9347

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22179

Females

9001

F18-39

9001

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21230

Females

8541

F18-39

8541

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19623

Females

7721

F18-39

7721

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19789

Females

7817

F18-39

7817

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19477

Females

7673

F18-39

7673

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19808

Females

7879

F18-39

7879

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18830

Females

7403

F18-39

7403

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19853

Females

7994

F18-39

7994

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

20045

Females

8030

F18-39

8030

Passing Analysis

Category:
Athletes Passed
2637
Passed By
242
Net Change
+2395
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25485
5K → 10K26488+176#25485#25309
10K → 15K27522+253#25309#25056
15K → 20K21925+194#25056#24862
20K → Half395-92#24862#24954
Half → 25K3121+311#24954#24643
25K → 30K4622+460#24643#24183
30K → 20M1831+182#24183#24001
20M → 21M1871+186#24001#23815
21M → 35K1230+123#23815#23692
35K → 23M1822+180#23692#23512
23M → 24M1231+122#23512#23390
24M → 40K1311+130#23390#23260
40K → 25.2M630+63#23260#23197
25.2M → Finish1103+107#23197#23090
TOTALS2637242+2395
📊

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