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BOSTON MARATHON 2023

Liz Grolimund

Bib: 5106•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Female)
#0 / 11423
Top 2%
Masters (Masters Women)
#0 / 6539
Top 0.7%
Division (F40-44)
#0 / 1878
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:43
Rank: #3398
Start → 5K
20:43 | 6:40/mi
10K· 6.21 mi
41:25
Rank: #3665 (-267)
5K → 10K
20:42 | 6:40/mi
15K· 9.32 mi
1:02:16
Rank: #3831 (-166)
10K → 15K
20:51 | 6:43/mi
20K· 12.43 mi
1:23:18
Rank: #3904 (-73)
15K → 20K
21:02 | 6:46/mi
Half· 13.11 mi
1:27:54
Rank: #3941 (-37)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:44:32
Rank: #4051 (-110)
Half → 25K
16:38 | 6:52/mi
30K· 18.64 mi
2:06:29
Rank: #4171 (-120)
25K → 30K
21:57 | 7:04/mi
20M
2:16:09
Rank: #4230 (-59)
30K → 20M
9:40 | 7:07/mi
21M
2:23:46
Rank: #4272 (-42)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:28:51
Rank: #4258 (+14)
21M → 35K
5:05 | 6:48/mi
23M
2:37:49
Rank: #4285 (-27)
35K → 23M
8:58 | 7:10/mi
24M
2:44:32
Rank: #4245 (+40)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:50:28
Rank: #4186 (+59)
24M → 40K
5:56 | 6:56/mi
25.2M
2:53:00
Rank: #4171 (+15)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:59:51
Rank: #4154 (+17)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:54
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:31:57
Pace7:01 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3020:436:4020:43
6:40
-
10K
6.21 mi10:44:1241:256:4020:42
6:40
0:00
15K
9.32 mi11:05:031:02:166:4120:51
6:43
+0:03
20K
12.43 mi11:26:051:23:186:4221:02
6:46
+0:03
Half
13.11 mi11:30:411:27:546:424:36
6:45
-0:01
25K
15.53 mi11:47:191:44:326:4416:38
6:52
+0:07
30K
18.64 mi12:09:162:06:296:4721:57
7:04
+0:12
20M
20.00 mi12:18:562:16:096:489:40
7:07
+0:03
21M
21.00 mi12:26:332:23:466:517:37
7:37
+0:30
35K
21.75 mi12:31:382:28:516:515:05
6:48
-0:49
23M
23.00 mi12:40:362:37:496:528:58
7:10
+0:22
24M
24.00 mi12:47:192:44:326:516:43
6:43
-0:27
40K
24.85 mi12:53:152:50:286:525:56
6:56
+0:13
25.2M
25.20 mi12:55:472:53:006:522:32
7:21
+0:25
Finish
26.22 mi13:02:382:59:516:526:51
6:43
-0:38

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

6:40 /mi

Average Pace

6:52 /mi

Slowest Pace

7:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:42

94% of race

Time at Steady Pace

10:09

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:23:3020:436:4020:43
6:40
#3398
10K
6.21 mi10:44:1241:256:4020:42
6:40
#3665
15K
9.32 mi11:05:031:02:166:4120:51
6:43
#3831
20K
12.43 mi11:26:051:23:186:4221:02
6:46
#3904
Half
13.11 mi11:30:411:27:546:424:36
6:45
#3941
25K
15.53 mi11:47:191:44:326:4416:38
6:52
#4051
30K
18.64 mi12:09:162:06:296:4721:57
7:04
#4171
20M
20.00 mi12:18:562:16:096:489:40
7:07
#4230
21M
21.00 mi12:26:332:23:466:517:37
7:37
#4272
35K
21.75 mi12:31:382:28:516:515:05
6:48
#4258
23M
23.00 mi12:40:362:37:496:528:58
7:10
#4285
24M
24.00 mi12:47:192:44:326:516:43
6:43
#4245
40K
24.85 mi12:53:152:50:286:525:56
6:56
#4186
25.2M
25.20 mi12:55:472:53:006:522:32
7:21
#4171
Finish
26.22 mi13:02:382:59:516:526:51
6:43
#4154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi33981921924257(Top 16%)262(Top 2%)262(Top 14%)
10K6.21 mi3.10 mi3665-267205-13205-134007(Top 15%)234(Top 2%)234(Top 12%)
15K9.32 mi3.11 mi3831-166214-9214-94257(Top 16%)262(Top 2%)262(Top 14%)
20K12.43 mi3.11 mi3904-73225-11225-114189(Top 16%)263(Top 2%)263(Top 14%)
Half13.11 mi0.68 mi3941-37229-4229-44849(Top 18%)343(Top 3%)343(Top 18%)
25K15.53 mi2.42 mi4051-110240-11240-114682(Top 18%)326(Top 3%)326(Top 17%)
30K18.64 mi3.11 mi4171-120248-8248-84762(Top 18%)364(Top 3%)364(Top 19%)
20M20.00 mi1.36 mi4230-59259-11259-114697(Top 18%)393(Top 3%)393(Top 21%)
21M21.00 mi1.00 mi4272-42274-15274-155203(Top 20%)574(Top 5%)574(Top 31%)
35K21.75 mi0.75 mi4258+14271+3271+34212(Top 16%)351(Top 3%)351(Top 19%)
23M23.00 mi1.25 mi4285-27272-1272-14620(Top 17%)440(Top 4%)440(Top 23%)
24M24.00 mi1.00 mi4245+40269+3269+33236(Top 12%)237(Top 2%)237(Top 13%)
40K24.85 mi0.85 mi4186+59268+1268+13564(Top 13%)323(Top 3%)323(Top 17%)
25.2M25.20 mi0.35 mi4171+15266+2266+23259(Top 12%)289(Top 3%)289(Top 15%)
Finish26.22 mi1.02 mi4154+172662663667(Top 14%)391(Top 3%)391(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4257

Females

262

F40-44

262

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4007

Females

234

F40-44

234

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4257

Females

262

F40-44

262

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4189

Females

263

F40-44

263

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4849

Females

343

F40-44

343

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4682

Females

326

F40-44

326

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4762

Females

364

F40-44

364

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4697

Females

393

F40-44

393

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5203

Females

574

F40-44

574

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4212

Females

351

F40-44

351

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4620

Females

440

F40-44

440

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3236

Females

237

F40-44

237

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3564

Females

323

F40-44

323

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3259

Females

289

F40-44

289

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3667

Females

391

F40-44

391

Passing Analysis

Category:
Athletes Passed
814
Passed By
1570
Net Change
-756
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3398
5K → 10K106373-267#3398#3665
10K → 15K55221-166#3665#3831
15K → 20K90163-73#3831#3904
20K → Half946-37#3904#3941
Half → 25K43153-110#3941#4051
25K → 30K82202-120#4051#4171
30K → 20M47106-59#4171#4230
20M → 21M5193-42#4230#4272
21M → 35K4026+14#4272#4258
35K → 23M6592-27#4258#4285
23M → 24M6727+40#4285#4245
24M → 40K8324+59#4245#4186
40K → 25.2M238+15#4186#4171
25.2M → Finish5336+17#4171#4154
TOTALS8141570-756
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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