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BOSTON MARATHON 2025

Chealsey Russell

MO

Bib: 17220 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:17/mi
22:38
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:57/mi
47:21
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:26/mi
1:13:33
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:01/mi
1:41:33
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:56/mi
1:47:39
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:13/mi
2:10:01
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:44/mi
2:40:15
↑ 181↓ 1480.2%
138 ft elev
20M
9:55/mi
2:53:43
↑ 64↓ 500.2%
148 ft elev
21M
11:27/mi
3:05:10
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:57/mi
3:11:52
↑ 17↓ 861.7%
156 ft elev
23M
9:46/mi
3:24:06
↑ 23↓ 630.6%
116 ft elev
24M
9:45/mi
3:33:51
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:38/mi
3:42:05
↓ 200.3%
20 ft elev
25.2M
10:41/mi
3:45:46
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:05/mi
3:55:01
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:39
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time2:07:22
Pace9:43 /mi
📊Positive Split: 18.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:0422:387:1722:38
7:17
-
10K
6.21 mi11:37:4747:217:3724:43
7:57
+0:40
15K
9.32 mi12:03:591:13:337:5326:12
8:26
+0:29
20K
12.43 mi12:31:591:41:338:1028:00
9:01
+0:35
Half
13.11 mi12:38:051:47:398:136:06
8:56
-0:05
25K
15.53 mi13:00:272:10:018:2222:22
9:13
+0:17
30K
18.64 mi13:30:412:40:158:3630:14
9:44
+0:31
20M
20.00 mi13:44:092:53:438:4113:28
9:55
+0:11
21M
21.00 mi13:55:363:05:108:4911:27
11:27
+1:32
35K
21.75 mi14:02:183:11:528:496:42
8:57
-2:30
23M
23.00 mi14:14:323:24:068:5212:14
9:46
+0:49
24M
24.00 mi14:24:173:33:518:559:45
9:45
-0:01
40K
24.85 mi14:32:313:42:058:568:14
9:38
-0:07
25.2M
25.20 mi14:36:123:45:468:583:41
10:41
+1:03
Finish
26.22 mi14:45:273:55:018:589:15
9:05
-1:36

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

7:17 /mi

Average Pace

8:58 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:13:33

31% of race

Time at Steady Pace

1:20:39

34% of race

Time at Slower Pace

1:20:49

34% of race

Average Pace: 8:58 /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 mi11:13:0422:387:1722:38
7:17
#10236
10K
6.21 mi11:37:4747:217:3724:43
7:57
#13233
15K
9.32 mi12:03:591:13:337:5326:12
8:26
#15431
20K
12.43 mi12:31:591:41:338:1028:00
9:01
#17161
Half
13.11 mi12:38:051:47:398:136:06
8:56
#17406
25K
15.53 mi13:00:272:10:018:2222:22
9:13
#18060
30K
18.64 mi13:30:412:40:158:3630:14
9:44
#18732
20M
20.00 mi13:44:092:53:438:4113:28
9:55
#18945
21M
21.00 mi13:55:363:05:108:4911:27
11:27
#19274
35K
21.75 mi14:02:183:11:528:496:42
8:57
#19232
23M
23.00 mi14:14:323:24:068:5212:14
9:46
#19283
24M
24.00 mi14:24:173:33:518:559:45
9:45
#19351
40K
24.85 mi14:32:313:42:058:568:14
9:38
#19346
25.2M
25.20 mi14:36:123:45:468:583:41
10:41
#19336
Finish
26.22 mi14:45:273:55:018:589:15
9:05
#19338
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi102361926192618928(Top 67%)6860(Top 56%)6860(Top 125%)
10K6.21 mi3.10 mi13233-29973487-15613487-156116138(Top 57%)5209(Top 43%)5209(Top 95%)
15K9.32 mi3.11 mi15431-21984806-13194806-131918928(Top 67%)6860(Top 56%)6860(Top 125%)
20K12.43 mi3.11 mi17161-17305836-10305836-103021039(Top 74%)8081(Top 66%)8081(Top 148%)
Half13.11 mi0.68 mi17406-2455986-1505986-15021573(Top 76%)8342(Top 68%)8342(Top 153%)
25K15.53 mi2.42 mi18060-6546397-4116397-41120874(Top 73%)8017(Top 66%)8017(Top 147%)
30K18.64 mi3.11 mi18732-6726791-3946791-39420785(Top 73%)8108(Top 66%)8108(Top 148%)
20M20.00 mi1.36 mi18945-2136946-1556946-15520643(Top 73%)8162(Top 67%)8162(Top 149%)
21M21.00 mi1.00 mi19274-3297157-2117157-21122529(Top 79%)9255(Top 76%)9255(Top 169%)
35K21.75 mi0.75 mi19232+427152+57152+518046(Top 64%)6928(Top 57%)6928(Top 127%)
23M23.00 mi1.25 mi19283-517209-577209-5719695(Top 69%)7884(Top 64%)7884(Top 144%)
24M24.00 mi1.00 mi19351-687281-727281-7220576(Top 72%)8377(Top 69%)8377(Top 153%)
40K24.85 mi0.85 mi19346+57290-97290-919219(Top 68%)7739(Top 63%)7739(Top 142%)
25.2M25.20 mi0.35 mi19336+107296-67296-619686(Top 69%)7997(Top 65%)7997(Top 146%)
Finish26.22 mi1.02 mi19338-27319-237319-2319433(Top 68%)7833(Top 64%)7833(Top 143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

18928

Females

6860

F18-39

6860

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16138

Females

5209

F18-39

5209

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

18928

Females

6860

F18-39

6860

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

21039

Females

8081

F18-39

8081

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

21573

Females

8342

F18-39

8342

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

20874

Females

8017

F18-39

8017

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20785

Females

8108

F18-39

8108

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20643

Females

8162

F18-39

8162

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22529

Females

9255

F18-39

9255

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18046

Females

6928

F18-39

6928

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

19695

Females

7884

F18-39

7884

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20576

Females

8377

F18-39

8377

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19219

Females

7739

F18-39

7739

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19686

Females

7997

F18-39

7997

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19433

Females

7833

F18-39

7833

Passing Analysis

Category:
Athletes Passed
614
Passed By
9716
Net Change
-9102
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10236
5K → 10K43001-2997#10236#13233
10K → 15K92207-2198#13233#15431
15K → 20K161746-1730#15431#17161
20K → Half4249-245#17161#17406
Half → 25K53707-654#17406#18060
25K → 30K87759-672#18060#18732
30K → 20M49262-213#18732#18945
20M → 21M31360-329#18945#19274
21M → 35K7634+42#19274#19232
35K → 23M73124-51#19232#19283
23M → 24M52120-68#19283#19351
24M → 40K5954+5#19351#19346
40K → 25.2M3727+10#19346#19336
25.2M → Finish6466-2#19336#19338
TOTALS6149716-9102
📊

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