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BOSTON MARATHON 2023

Michelle Griffith-Aresco

Bib: 21320•F

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Masters (Masters Women)
#0 / 6539
Top 35%
Division (F45-49)
#0 / 1817
Top 41%
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
8:29/mi
26:21
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
52:21
↑ 79↓ 1380.4%
15K· 9.32 mi
8:35/mi
1:19:01
↑ 67↓ 78
20K· 12.43 mi
8:37/mi
1:45:46
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:51:29
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:12:03
↑ 66↓ 880.2%
30K· 18.64 mi
8:42/mi
2:39:04
↑ 181↓ 1480.2%
20M
8:35/mi
2:50:44
↑ 64↓ 500.2%
21M
8:59/mi
2:59:43
↑ 106↓ 241.6%
35K· 21.75 mi
8:15/mi
3:05:53
↑ 17↓ 861.7%
23M
8:25/mi
3:16:25
↑ 23↓ 630.6%
24M
8:17/mi
3:24:42
↓ 821.3%
40K· 24.85 mi
8:29/mi
3:31:57
↓ 200.3%
25.2M
8:59/mi
3:35:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:52/mi
3:43:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:51:29
Pace8:30 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:51:35
Pace8:31 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4326:218:2926:21
8:29
-
10K
6.21 mi11:45:4352:218:2526:00
8:22
-0:07
15K
9.32 mi12:12:231:19:018:2926:40
8:35
+0:13
20K
12.43 mi12:39:081:45:468:3126:45
8:37
+0:02
Half
13.11 mi12:44:511:51:298:305:43
8:23
-0:14
25K
15.53 mi13:05:252:12:038:3020:34
8:29
+0:06
30K
18.64 mi13:32:262:39:048:3227:01
8:42
+0:13
20M
20.00 mi13:44:062:50:448:3211:40
8:35
-0:07
21M
21.00 mi13:53:052:59:438:338:59
8:59
+0:24
35K
21.75 mi13:59:153:05:538:336:10
8:15
-0:44
23M
23.00 mi14:09:473:16:258:3210:32
8:25
+0:10
24M
24.00 mi14:18:043:24:428:328:17
8:17
-0:08
40K
24.85 mi14:25:193:31:578:327:15
8:29
+0:12
25.2M
25.20 mi14:28:253:35:038:323:06
8:59
+0:30
Finish
26.22 mi14:36:263:43:048:318:01
7:52
-1:07

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

7:52 /mi

Average Pace

8:31 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:58

82% of race

Time at Steady Pace

39:06

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:30 /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 mi11:19:4326:218:2926:21
8:29
#17439
10K
6.21 mi11:45:4352:218:2526:00
8:22
#17385
15K
9.32 mi12:12:231:19:018:2926:40
8:35
#17706
20K
12.43 mi12:39:081:45:468:3126:45
8:37
#17633
Half
13.11 mi12:44:511:51:298:305:43
8:23
#17597
25K
15.53 mi13:05:252:12:038:3020:34
8:29
#17321
30K
18.64 mi13:32:262:39:048:3227:01
8:42
#16966
20M
20.00 mi13:44:062:50:448:3211:40
8:35
#16753
21M
21.00 mi13:53:052:59:438:338:59
8:59
#16543
35K
21.75 mi13:59:153:05:538:336:10
8:15
#16435
23M
23.00 mi14:09:473:16:258:3210:32
8:25
#16192
24M
24.00 mi14:18:043:24:428:328:17
8:17
#16061
40K
24.85 mi14:25:193:31:578:327:15
8:29
#15941
25.2M
25.20 mi14:28:253:35:038:323:06
8:59
#15875
Finish
26.22 mi14:36:263:43:048:318:01
7:52
#15690
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi174396213621318331(Top 69%)6690(Top 59%)6690(Top 368%)
10K6.21 mi3.10 mi17385+546153+606153+6017369(Top 65%)6102(Top 53%)6102(Top 336%)
15K9.32 mi3.11 mi17706-3216339-1866339-18618331(Top 69%)6690(Top 59%)6690(Top 368%)
20K12.43 mi3.11 mi17633+736296+436296+4317554(Top 66%)6256(Top 55%)6256(Top 344%)
Half13.11 mi0.68 mi17597+366278+186278+1817022(Top 64%)5901(Top 52%)5901(Top 325%)
25K15.53 mi2.42 mi17321+2766131+1476131+14716090(Top 60%)5497(Top 48%)5497(Top 303%)
30K18.64 mi3.11 mi16966+3555942+1895942+18915503(Top 58%)5223(Top 46%)5223(Top 287%)
20M20.00 mi1.36 mi16753+2135837+1055837+10514206(Top 53%)4548(Top 40%)4548(Top 250%)
21M21.00 mi1.00 mi16543+2105732+1055732+10513357(Top 50%)4144(Top 36%)4144(Top 228%)
35K21.75 mi0.75 mi16435+1085678+545678+5413812(Top 52%)4475(Top 39%)4475(Top 246%)
23M23.00 mi1.25 mi16192+2435553+1255553+12512706(Top 48%)3919(Top 34%)3919(Top 216%)
24M24.00 mi1.00 mi16061+1315501+525501+5213202(Top 50%)4240(Top 37%)4240(Top 233%)
40K24.85 mi0.85 mi15941+1205446+555446+5513251(Top 50%)4349(Top 38%)4349(Top 239%)
25.2M25.20 mi0.35 mi15875+665411+355411+3512576(Top 47%)4035(Top 35%)4035(Top 222%)
Finish26.22 mi1.02 mi15690+1855305+1065305+10611213(Top 42%)3319(Top 29%)3319(Top 183%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18331

Females

6690

F45-49

6690

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17369

Females

6102

F45-49

6102

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18331

Females

6690

F45-49

6690

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17554

Females

6256

F45-49

6256

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17022

Females

5901

F45-49

5901

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16090

Females

5497

F45-49

5497

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15503

Females

5223

F45-49

5223

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

14206

Females

4548

F45-49

4548

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

13357

Females

4144

F45-49

4144

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13812

Females

4475

F45-49

4475

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12706

Females

3919

F45-49

3919

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

13202

Females

4240

F45-49

4240

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13251

Females

4349

F45-49

4349

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12576

Females

4035

F45-49

4035

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11213

Females

3319

F45-49

3319

Passing Analysis

Category:
Athletes Passed
2693
Passed By
944
Net Change
+1749
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17439
5K → 10K336282+54#17439#17385
10K → 15K98419-321#17385#17706
15K → 20K206133+73#17706#17633
20K → Half5317+36#17633#17597
Half → 25K29014+276#17597#17321
25K → 30K38429+355#17321#16966
30K → 20M2174+213#16966#16753
20M → 21M2199+210#16753#16543
21M → 35K1157+108#16543#16435
35K → 23M2496+243#16435#16192
23M → 24M14110+131#16192#16061
24M → 40K1288+120#16061#15941
40K → 25.2M693+66#15941#15875
25.2M → Finish1883+185#15875#15690
TOTALS2693944+1749
📊

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