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BOSTON MARATHON 2023

Justine Reed

Bib: 18024•F

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
Masters (Masters Women)
#0 / 6539
Top 25%
Division (F40-44)
#0 / 1878
Top 45%
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
8:27/mi
26:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:07/mi
51:29
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:16:19
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:41:32
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:47:03
↑ 19↓ 370.5%
25K· 15.53 mi
8:53/mi
2:08:36
↑ 66↓ 880.2%
30K· 18.64 mi
8:14/mi
2:34:11
↑ 181↓ 1480.2%
20M
8:21/mi
2:45:32
↑ 64↓ 500.2%
21M
8:41/mi
2:54:13
↑ 106↓ 241.6%
35K· 21.75 mi
8:08/mi
3:00:18
↑ 17↓ 861.7%
23M
8:22/mi
3:10:47
↑ 23↓ 630.6%
24M
8:05/mi
3:18:52
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:25:55
↓ 200.3%
25.2M
8:42/mi
3:28:55
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:36:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:03
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time1:49:50
Pace8:23 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:0226:158:2726:15
8:27
-
10K
6.21 mi12:07:1651:298:1725:14
8:07
-0:20
15K
9.32 mi12:32:061:16:198:1124:50
8:00
-0:07
20K
12.43 mi12:57:191:41:328:1025:13
8:07
+0:07
Half
13.11 mi13:02:501:47:038:105:31
8:05
-0:02
25K
15.53 mi13:24:232:08:368:1721:33
8:53
+0:48
30K
18.64 mi13:49:582:34:118:1625:35
8:14
-0:39
20M
20.00 mi14:01:192:45:328:1711:21
8:21
+0:07
21M
21.00 mi14:10:002:54:138:188:41
8:41
+0:20
35K
21.75 mi14:16:053:00:188:176:05
8:08
-0:33
23M
23.00 mi14:26:343:10:478:1810:29
8:22
+0:14
24M
24.00 mi14:34:393:18:528:178:05
8:05
-0:17
40K
24.85 mi14:41:423:25:558:177:03
8:15
+0:10
25.2M
25.20 mi14:44:423:28:558:173:00
8:42
+0:27
Finish
26.22 mi14:52:403:36:538:177:58
7:49
-0:53

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

7:49 /mi

Average Pace

8:17 /mi

Slowest Pace

8:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:39

85% of race

Time at Steady Pace

33:14

15% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:16 /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 mi11:42:0226:158:2726:15
8:27
#17210
10K
6.21 mi12:07:1651:298:1725:14
8:07
#16403
15K
9.32 mi12:32:061:16:198:1124:50
8:00
#15736
20K
12.43 mi12:57:191:41:328:1025:13
8:07
#15379
Half
13.11 mi13:02:501:47:038:105:31
8:05
#15345
25K
15.53 mi13:24:232:08:368:1721:33
8:53
#15882
30K
18.64 mi13:49:582:34:118:1625:35
8:14
#15266
20M
20.00 mi14:01:192:45:328:1711:21
8:21
#15074
21M
21.00 mi14:10:002:54:138:188:41
8:41
#14865
35K
21.75 mi14:16:053:00:188:176:05
8:08
#14773
23M
23.00 mi14:26:343:10:478:1810:29
8:22
#14626
24M
24.00 mi14:34:393:18:528:178:05
8:05
#14484
40K
24.85 mi14:41:423:25:558:177:03
8:15
#14366
25.2M
25.20 mi14:44:423:28:558:173:00
8:42
#14310
Finish
26.22 mi14:52:403:36:538:177:58
7:49
#14152
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi172106069606914345(Top 54%)4290(Top 38%)4290(Top 228%)
10K6.21 mi3.10 mi16403+8075527+5425527+54215687(Top 59%)5070(Top 44%)5070(Top 270%)
15K9.32 mi3.11 mi15736+6675114+4135114+41314345(Top 54%)4290(Top 38%)4290(Top 228%)
20K12.43 mi3.11 mi15379+3574919+1954919+19514342(Top 54%)4313(Top 38%)4313(Top 230%)
Half13.11 mi0.68 mi15345+344905+144905+1415066(Top 57%)4711(Top 41%)4711(Top 251%)
25K15.53 mi2.42 mi15882-5375261-3565261-35618391(Top 69%)6777(Top 59%)6777(Top 361%)
30K18.64 mi3.11 mi15266+6164920+3414920+34112590(Top 47%)3520(Top 31%)3520(Top 187%)
20M20.00 mi1.36 mi15074+1924820+1004820+10012744(Top 48%)3715(Top 33%)3715(Top 198%)
21M21.00 mi1.00 mi14865+2094709+1114709+11111599(Top 44%)3204(Top 28%)3204(Top 171%)
35K21.75 mi0.75 mi14773+924665+444665+4413047(Top 49%)4033(Top 35%)4033(Top 215%)
23M23.00 mi1.25 mi14626+1474602+634602+6312437(Top 47%)3767(Top 33%)3767(Top 201%)
24M24.00 mi1.00 mi14484+1424543+594543+5911875(Top 45%)3537(Top 31%)3537(Top 188%)
40K24.85 mi0.85 mi14366+1184495+484495+4811720(Top 44%)3532(Top 31%)3532(Top 188%)
25.2M25.20 mi0.35 mi14310+564468+274468+2710857(Top 41%)3131(Top 27%)3131(Top 167%)
Finish26.22 mi1.02 mi14152+1584389+794389+7910854(Top 41%)3128(Top 27%)3128(Top 167%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14345

Females

4290

F40-44

4290

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15687

Females

5070

F40-44

5070

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14345

Females

4290

F40-44

4290

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14342

Females

4313

F40-44

4313

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

15066

Females

4711

F40-44

4711

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18391

Females

6777

F40-44

6777

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12590

Females

3520

F40-44

3520

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12744

Females

3715

F40-44

3715

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11599

Females

3204

F40-44

3204

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

13047

Females

4033

F40-44

4033

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12437

Females

3767

F40-44

3767

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

11875

Females

3537

F40-44

3537

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11720

Females

3532

F40-44

3532

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10857

Females

3131

F40-44

3131

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10854

Females

3128

F40-44

3128

Passing Analysis

Category:
Athletes Passed
3892
Passed By
834
Net Change
+3058
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17210
5K → 10K88780+807#17210#16403
10K → 15K69730+667#16403#15736
15K → 20K39538+357#15736#15379
20K → Half5420+34#15379#15345
Half → 25K33570-537#15345#15882
25K → 30K6204+616#15882#15266
30K → 20M20412+192#15266#15074
20M → 21M21910+209#15074#14865
21M → 35K10210+92#14865#14773
35K → 23M17023+147#14773#14626
23M → 24M15614+142#14626#14484
24M → 40K1268+118#14484#14366
40K → 25.2M659+56#14366#14310
25.2M → Finish1646+158#14310#14152
TOTALS3892834+3058
📊

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