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BOSTON MARATHON 2023

Ashley Relf

Bib: 18727•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Masters (Masters Women)
#0 / 6539
Top 9%
Division (F40-44)
#0 / 1878
Top 19%
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
7:43/mi
23:58
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:11:33
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:35:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:41:19
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
2:00:15
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:24:48
↑ 181↓ 1480.2%
20M
8:01/mi
2:35:42
↑ 64↓ 500.2%
21M
8:25/mi
2:44:07
↑ 106↓ 241.6%
35K· 21.75 mi
7:33/mi
2:49:46
↑ 17↓ 861.7%
23M
7:55/mi
2:59:41
↑ 23↓ 630.6%
24M
7:40/mi
3:07:21
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:14:01
↓ 200.3%
25.2M
8:36/mi
3:16:59
↑ 13↓ 160.2%
Finish· 26.22 mi
7:25/mi
3:24:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:19
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:43:13
Pace7:52 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0823:587:4323:58
7:43
-
10K
6.21 mi11:38:4747:377:4023:39
7:37
-0:06
15K
9.32 mi12:02:431:11:337:4123:56
7:42
+0:05
20K
12.43 mi12:27:061:35:567:4324:23
7:51
+0:09
Half
13.11 mi12:32:291:41:197:445:23
7:53
+0:02
25K
15.53 mi12:51:252:00:157:4418:56
7:49
-0:04
30K
18.64 mi13:15:582:24:487:4624:33
7:54
+0:05
20M
20.00 mi13:26:522:35:427:4710:54
8:01
+0:07
21M
21.00 mi13:35:172:44:077:498:25
8:25
+0:24
35K
21.75 mi13:40:562:49:467:485:39
7:33
-0:52
23M
23.00 mi13:50:512:59:417:499:55
7:55
+0:22
24M
24.00 mi13:58:313:07:217:487:40
7:40
-0:15
40K
24.85 mi14:05:113:14:017:486:40
7:48
+0:08
25.2M
25.20 mi14:08:093:16:597:492:58
8:36
+0:48
Finish
26.22 mi14:15:423:24:327:487:33
7:25
-1:11

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

7:25 /mi

Average Pace

7:48 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:13:09

94% of race

Time at Steady Pace

11:23

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:48 /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 mi11:15:0823:587:4323:58
7:43
#11586
10K
6.21 mi11:38:4747:377:4023:39
7:37
#11460
15K
9.32 mi12:02:431:11:337:4123:56
7:42
#11586
20K
12.43 mi12:27:061:35:567:4324:23
7:51
#11685
Half
13.11 mi12:32:291:41:197:445:23
7:53
#11787
25K
15.53 mi12:51:252:00:157:4418:56
7:49
#11632
30K
18.64 mi13:15:582:24:487:4624:33
7:54
#11313
20M
20.00 mi13:26:522:35:427:4710:54
8:01
#11232
21M
21.00 mi13:35:172:44:077:498:25
8:25
#11118
35K
21.75 mi13:40:562:49:467:485:39
7:33
#11032
23M
23.00 mi13:50:512:59:417:499:55
7:55
#10896
24M
24.00 mi13:58:313:07:217:487:40
7:40
#10784
40K
24.85 mi14:05:113:14:017:486:40
7:48
#10676
25.2M
25.20 mi14:08:093:16:597:492:58
8:36
#10661
Finish
26.22 mi14:15:423:24:327:487:33
7:25
#10518
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi115862632263211875(Top 45%)2832(Top 25%)2832(Top 151%)
10K6.21 mi3.10 mi11460+1262580+522580+5211449(Top 43%)2577(Top 23%)2577(Top 137%)
15K9.32 mi3.11 mi11586-1262652-722652-7211875(Top 45%)2832(Top 25%)2832(Top 151%)
20K12.43 mi3.11 mi11685-992733-812733-8112152(Top 46%)3054(Top 27%)3054(Top 163%)
Half13.11 mi0.68 mi11787-1022789-562789-5613504(Top 51%)3780(Top 33%)3780(Top 201%)
25K15.53 mi2.42 mi11632+1552716+732716+7311165(Top 42%)2567(Top 22%)2567(Top 137%)
30K18.64 mi3.11 mi11313+3192595+1212595+12110169(Top 38%)2241(Top 20%)2241(Top 119%)
20M20.00 mi1.36 mi11232+812559+362559+3610447(Top 39%)2455(Top 21%)2455(Top 131%)
21M21.00 mi1.00 mi11118+1142519+402519+409989(Top 38%)2381(Top 21%)2381(Top 127%)
35K21.75 mi0.75 mi11032+862486+332486+338987(Top 34%)1924(Top 17%)1924(Top 102%)
23M23.00 mi1.25 mi10896+1362446+402446+409242(Top 35%)2145(Top 19%)2145(Top 114%)
24M24.00 mi1.00 mi10784+1122414+322414+328890(Top 33%)2052(Top 18%)2052(Top 109%)
40K24.85 mi0.85 mi10676+1082388+262388+268699(Top 33%)2035(Top 18%)2035(Top 108%)
25.2M25.20 mi0.35 mi10661+152395-72395-710207(Top 38%)2787(Top 24%)2787(Top 148%)
Finish26.22 mi1.02 mi10518+1432356+392356+397887(Top 30%)1786(Top 16%)1786(Top 95%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

11875

Females

2832

F40-44

2832

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11449

Females

2577

F40-44

2577

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

11875

Females

2832

F40-44

2832

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12152

Females

3054

F40-44

3054

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13504

Females

3780

F40-44

3780

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11165

Females

2567

F40-44

2567

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10169

Females

2241

F40-44

2241

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10447

Females

2455

F40-44

2455

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

9989

Females

2381

F40-44

2381

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

8987

Females

1924

F40-44

1924

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9242

Females

2145

F40-44

2145

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8890

Females

2052

F40-44

2052

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8699

Females

2035

F40-44

2035

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10207

Females

2787

F40-44

2787

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

7887

Females

1786

F40-44

1786

Passing Analysis

Category:
Athletes Passed
2201
Passed By
1133
Net Change
+1068
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11586
5K → 10K364238+126#11586#11460
10K → 15K132258-126#11460#11586
15K → 20K124223-99#11586#11685
20K → Half8110-102#11685#11787
Half → 25K21762+155#11787#11632
25K → 30K36142+319#11632#11313
30K → 20M13554+81#11313#11232
20M → 21M14531+114#11232#11118
21M → 35K9711+86#11118#11032
35K → 23M16125+136#11032#10896
23M → 24M13422+112#10896#10784
24M → 40K12820+108#10784#10676
40K → 25.2M3520+15#10676#10661
25.2M → Finish16017+143#10661#10518
TOTALS22011133+1068
📊

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